diff --git a/src/V3AstNodes.h b/src/V3AstNodes.h
index e92aee501..f42e159d9 100644
--- a/src/V3AstNodes.h
+++ b/src/V3AstNodes.h
@@ -3570,10 +3570,11 @@ public:
         addNOp1p(exprsp);
         addNOp2p(NULL);
     }
-    AstSFormatF(FileLine* fl, NoFormat, AstNode* exprsp, char missingArgChar = 'd')
+    AstSFormatF(FileLine* fl, NoFormat, AstNode* exprsp, char missingArgChar = 'd',
+                bool hidden = true)
         : ASTGEN_SUPER(fl)
         , m_text("")
-        , m_hidden(true)
+        , m_hidden(hidden)
         , m_hasFormat(false)
         , m_missingArgChar(missingArgChar) {
         dtypeSetString();
diff --git a/src/verilog.y b/src/verilog.y
index 5f840c407..a3d819f44 100644
--- a/src/verilog.y
+++ b/src/verilog.y
@@ -3642,7 +3642,7 @@ system_f_call_or_t<nodep>:	// IEEE: part of system_tf_call (can be task or func)
 	|	yD_RIGHT '(' exprOrDataType ',' expr ')'	{ $$ = new AstAttrOf($1,AstAttrType::DIM_RIGHT,$3,$5); }
 	|	yD_RTOI '(' expr ')'			{ $$ = new AstRToIS($1,$3); }
 	|	yD_SAMPLED '(' expr ')'			{ $$ = new AstSampled($1, $3); }
-	|	yD_SFORMATF '(' str commaEListE ')'	{ $$ = new AstSFormatF($1,*$3,false,$4); }
+	|	yD_SFORMATF '(' exprDispList ')'	{ $$ = new AstSFormatF($1, AstSFormatF::NoFormat(), $3, 'd', false); }
 	|	yD_SHORTREALTOBITS '(' expr ')'		{ $$ = new AstRealToBits($1,$3); UNSUPREAL($1); }
 	|	yD_SIGNED '(' expr ')'			{ $$ = new AstSigned($1,$3); }
 	|	yD_SIN '(' expr ')'			{ $$ = new AstSinD($1,$3); }
@@ -4313,11 +4313,6 @@ exprDispList<nodep>:		// exprList for within $display
 			{ $$ = $1; $1->addNext(new AstConst($<fl>2, AstConst::VerilogStringLiteral(), " ")); }
 	;
 
-commaEListE<nodep>:
-		/* empty */				{ $$ = NULL; }
-	|	',' exprList				{ $$ = $2; }
-	;
-
 vrdList<nodep>:
 		idClassSel				{ $$ = $1; }
 	|	vrdList ',' idClassSel			{ $$ = $1;$1->addNext($3); }
diff --git a/test_regress/t/t_sys_sformat.v b/test_regress/t/t_sys_sformat.v
index 96bf9f389..d4da7ac54 100644
--- a/test_regress/t/t_sys_sformat.v
+++ b/test_regress/t/t_sys_sformat.v
@@ -62,11 +62,11 @@ module t;
       if (str2 !== "lib=t") $stop;
 
       str3 = $sformatf("u=%u", {"a","b","c","d"}); // Value selected so is printable
-`ifdef TEST_VERBOSE  $display("chku %s %s",str3,str3);  `endif
+`ifdef TEST_VERBOSE  $display("chku %s", str3);  `endif
       if (str3 !== "u=dcba") $stop;
 
       str3 = $sformatf("v=%v", {"a","b","c","d"}); // Value selected so is printable
-`ifdef TEST_VERBOSE  $display("chkv %s %s",str3,str3);  `endif
+`ifdef TEST_VERBOSE  $display("chkv %s", str3);  `endif
 
       $sformat(ochar,"%s","c");
       if (ochar != "c") $stop;