diff --git a/src/V3Error.h b/src/V3Error.h
index 98ce5220f..1c1cfae83 100644
--- a/src/V3Error.h
+++ b/src/V3Error.h
@@ -77,6 +77,7 @@ public:
         CONTASSREG,     // Continuous assignment on reg
         DEFPARAM,       // Style: Defparam
         DECLFILENAME,   // Declaration doesn't match filename
+        DEPRECATED,     // Feature will be deprecated
         ENDLABEL,       // End lable name mismatch
         GENCLK,         // Generated Clock
         IFDEPTH,        // If statements too deep
@@ -143,7 +144,7 @@ public:
             "BLKANDNBLK", "BLKLOOPINIT", "BLKSEQ", "BSSPACE",
             "CASEINCOMPLETE", "CASEOVERLAP", "CASEWITHX", "CASEX", "CDCRSTLOGIC", "CLKDATA",
             "CMPCONST", "COLONPLUS", "COMBDLY", "CONTASSREG",
-            "DEFPARAM", "DECLFILENAME",
+            "DEFPARAM", "DECLFILENAME", "DEPRECATED",
             "ENDLABEL", "GENCLK",
             "IFDEPTH", "IGNOREDRETURN",
             "IMPERFECTSCH", "IMPLICIT", "IMPORTSTAR", "IMPURE",
diff --git a/src/V3LinkParse.cpp b/src/V3LinkParse.cpp
index 05b16ebd8..ff99771f7 100644
--- a/src/V3LinkParse.cpp
+++ b/src/V3LinkParse.cpp
@@ -260,6 +260,7 @@ private:
         }
         else if (nodep->attrType() == AstAttrType::VAR_CLOCK) {
             UASSERT_OBJ(m_varp, nodep, "Attribute not attached to variable");
+            nodep->v3warn(DEPRECATED, "sc_clock is deprecated and will be removed");
             m_varp->attrScClocked(true);
             nodep->unlinkFrBack()->deleteTree(); VL_DANGLING(nodep);
         }
diff --git a/src/verilog.y b/src/verilog.y
index d51d675f1..4e34aed7e 100644
--- a/src/verilog.y
+++ b/src/verilog.y
@@ -5599,7 +5599,7 @@ vltOffFront<errcodeen>:
 	|	yVLT_LINT_OFF yVLT_D_MSG yaID__ETC
 			{ $$ = V3ErrorCode((*$3).c_str());
 			  if ($$ == V3ErrorCode::EC_ERROR) { $1->v3error("Unknown Error Code: "<<*$3<<endl); }
-			  $1->v3info("Deprecated -msg in configuration files, use -rule instead."<<endl); }
+			  $2->v3warn(DEPRECATED, "Deprecated -msg in configuration files, use -rule instead."<<endl); }
 	|	yVLT_LINT_OFF yVLT_D_RULE yaID__ETC
 			{ $$ = V3ErrorCode((*$3).c_str());
 			  if ($$ == V3ErrorCode::EC_ERROR) { $1->v3error("Unknown Error Code: "<<*$3<<endl);  } }
@@ -5612,7 +5612,7 @@ vltOnFront<errcodeen>:
 	|	yVLT_LINT_ON yVLT_D_MSG yaID__ETC
 			{ $$ = V3ErrorCode((*$3).c_str());
 			  if ($$ == V3ErrorCode::EC_ERROR) { $1->v3error("Unknown Error Code: "<<*$3<<endl);  }
-			  $1->v3info("Deprecated -msg in configuration files, use -rule instead."<<endl); }
+			  $2->v3warn(DEPRECATED, "Deprecated -msg in configuration files, use -rule instead."<<endl); }
 	|	yVLT_LINT_ON yVLT_D_RULE yaID__ETC
 			{ $$ = V3ErrorCode((*$3).c_str());
 			  if ($$ == V3ErrorCode::EC_ERROR) { $1->v3error("Unknown Error Code: "<<*$3<<endl);  } }
diff --git a/test_regress/t/t_clk_first.v b/test_regress/t/t_clk_first.v
index 32fb1c14b..52cf01582 100644
--- a/test_regress/t/t_clk_first.v
+++ b/test_regress/t/t_clk_first.v
@@ -8,8 +8,8 @@ module t (/*AUTOARG*/
    clk, fastclk
    );
 
-   input clk /*verilator sc_clock*/;
-   input fastclk /*verilator sc_clock*/;
+   input clk;
+   input fastclk;
    reg 	 reset_l;
 
    int cyc;
@@ -32,8 +32,8 @@ module t_clk (/*AUTOARG*/
    clk, fastclk, reset_l
    );
 
-   input clk /*verilator sc_clock*/;
-   input fastclk /*verilator sc_clock*/;
+   input clk;
+   input fastclk;
    input reset_l;
 
    // surefire lint_off STMINI
diff --git a/test_regress/t/t_clk_first_bad.out b/test_regress/t/t_clk_first_bad.out
new file mode 100644
index 000000000..2e9e41bf1
--- /dev/null
+++ b/test_regress/t/t_clk_first_bad.out
@@ -0,0 +1,5 @@
+%Warning-DEPRECATED: t/t_clk_first_deprecated.v:11: sc_clock is deprecated and will be removed
+   input clk /*verilator sc_clock*/ ;
+             ^~~~~~~~~~~~~~~~~~~~~~
+                     ... Use "/* verilator lint_off DEPRECATED */" and lint_on around source to disable this message.
+%Error: Exiting due to
diff --git a/test_regress/t/t_clk_first_bad.pl b/test_regress/t/t_clk_first_bad.pl
new file mode 100755
index 000000000..3f7b54038
--- /dev/null
+++ b/test_regress/t/t_clk_first_bad.pl
@@ -0,0 +1,21 @@
+#!/usr/bin/perl
+if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); die; }
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2003 by Wilson Snyder. This program is free software; you can
+# redistribute it and/or modify it under the terms of either the GNU
+# Lesser General Public License Version 3 or the Perl Artistic License
+# Version 2.0.
+
+scenarios(vlt => 1);
+
+top_filename("t/t_clk_first_deprecated.v");
+
+lint(
+    verilator_flags2 => ["--lint-only"],
+    fails => 1,
+    expect_filename => $Self->{golden_filename},
+    );
+
+ok(1);
+1;
diff --git a/test_regress/t/t_clk_first_deprecated.pl b/test_regress/t/t_clk_first_deprecated.pl
new file mode 100755
index 000000000..01d7bf8d0
--- /dev/null
+++ b/test_regress/t/t_clk_first_deprecated.pl
@@ -0,0 +1,17 @@
+#!/usr/bin/perl
+if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); die; }
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2003 by Wilson Snyder. This program is free software; you can
+# redistribute it and/or modify it under the terms of either the GNU
+# Lesser General Public License Version 3 or the Perl Artistic License
+# Version 2.0.
+
+scenarios(vlt => 1);
+
+lint(
+    verilator_flags2 => ["--lint-only", "-Wno-DEPRECATED"],
+    );
+
+ok(1);
+1;
diff --git a/test_regress/t/t_clk_first_deprecated.v b/test_regress/t/t_clk_first_deprecated.v
new file mode 100644
index 000000000..5c5f5ce12
--- /dev/null
+++ b/test_regress/t/t_clk_first_deprecated.v
@@ -0,0 +1,13 @@
+// DESCRIPTION: Verilator: Verilog Test module
+//
+// This file ONLY is placed into the Public Domain, for any use,
+// without warranty, 2003 by Wilson Snyder.
+
+module t (/*AUTOARG*/
+   // Inputs
+   clk
+   );
+
+   input clk /*verilator sc_clock*/;
+
+endmodule
diff --git a/test_regress/t/t_vlt_warn.vlt b/test_regress/t/t_vlt_warn.vlt
index b1b7998aa..4e94fb4cb 100644
--- a/test_regress/t/t_vlt_warn.vlt
+++ b/test_regress/t/t_vlt_warn.vlt
@@ -5,10 +5,11 @@
 
 `verilator_config
 
-lint_off -msg  CASEINCOMPLETE -file "t/t_vlt_warn.v" // Deprecation info about msg
+lint_off -rule DEPRECATED     -file "t/t_vlt_warn.vlt" -lines 12
+lint_off -rule CASEINCOMPLETE -file "t/t_vlt_warn.v"
 lint_off -rule WIDTH          -file "t/t_vlt_warn.v" -lines 18
 // Test wildcard filenames
-lint_off -rule WIDTH          -file "*/t_vlt_warn.v" -lines 19-19
+lint_off -msg WIDTH           -file "*/t_vlt_warn.v" -lines 19-19
 // Test global disables
 lint_off                      -file "*/t_vlt_warn.v" -lines 20-20
 
diff --git a/test_regress/t/t_vlt_warn_bad.out b/test_regress/t/t_vlt_warn_bad.out
new file mode 100644
index 000000000..0a847a31a
--- /dev/null
+++ b/test_regress/t/t_vlt_warn_bad.out
@@ -0,0 +1,5 @@
+%Warning-DEPRECATED: t/t_vlt_warn_bad.vlt:11: Deprecated -msg in configuration files, use -rule instead.
+lint_off -msg WIDTH          -file "*/t_vlt_warn.v" -lines 19-19
+         ^~~~
+                     ... Use "/* verilator lint_off DEPRECATED */" and lint_on around source to disable this message.
+%Error: Exiting due to
diff --git a/test_regress/t/t_vlt_warn_bad.pl b/test_regress/t/t_vlt_warn_bad.pl
new file mode 100755
index 000000000..5dd7bae92
--- /dev/null
+++ b/test_regress/t/t_vlt_warn_bad.pl
@@ -0,0 +1,21 @@
+#!/usr/bin/perl
+if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); die; }
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2008 by Wilson Snyder. This program is free software; you can
+# redistribute it and/or modify it under the terms of either the GNU
+# Lesser General Public License Version 3 or the Perl Artistic License
+# Version 2.0.
+
+scenarios(vlt => 1);
+
+top_filename("t/t_vlt_warn.v");
+
+lint(
+    verilator_flags2 => ["--lint-only t/t_vlt_warn_bad.vlt"],
+    fails => 1,
+    expect_filename => $Self->{golden_filename},
+    );
+
+ok(1);
+1;
diff --git a/test_regress/t/t_vlt_warn_bad.vlt b/test_regress/t/t_vlt_warn_bad.vlt
new file mode 100644
index 000000000..b16f429b1
--- /dev/null
+++ b/test_regress/t/t_vlt_warn_bad.vlt
@@ -0,0 +1,17 @@
+// DESCRIPTION: Verilator: Verilog Test module
+//
+// This file ONLY is placed into the Public Domain, for any use,
+// without warranty, 2010 by Wilson Snyder.
+
+`verilator_config
+
+lint_off -rule CASEINCOMPLETE -file "t/t_vlt_warn.v"
+lint_off -rule WIDTH          -file "t/t_vlt_warn.v" -lines 18
+// Test wildcard filenames
+lint_off -msg WIDTH          -file "*/t_vlt_warn.v" -lines 19-19
+// Test global disables
+lint_off                      -file "*/t_vlt_warn.v" -lines 20-20
+
+coverage_off -file "t/t_vlt_warn.v"
+// Test --flag is also accepted
+tracing_off --file "t/t_vlt_warn.v"