diff --git a/Changes b/Changes
index e88cee698..a7271be19 100644
--- a/Changes
+++ b/Changes
@@ -13,6 +13,8 @@ The contributors that suggested a given feature are shown in []. Thanks!
 
 ****  Fix LDFLAGS and CFLAGS not preserving order, bug1130. [Olof Kindgren]
 
+****  Fix internal error on initializing parameter array, bug1131. [Jie Xu]
+
 
 * Verilator 3.900 2017-01-15
 
diff --git a/src/V3Width.cpp b/src/V3Width.cpp
index 2696f2c81..4ec6f6a8e 100644
--- a/src/V3Width.cpp
+++ b/src/V3Width.cpp
@@ -1283,7 +1283,7 @@ private:
 	    AstNodeDType* vdtypep = m_vup->dtypep();
 	    if (!vdtypep) nodep->v3fatalSrc("InitArray type not assigned by AstPattern/Var visitor");
 	    nodep->dtypep(vdtypep);
-	    if (AstNodeArrayDType* arrayp = vdtypep->castNodeArrayDType()) {
+	    if (AstNodeArrayDType* arrayp = vdtypep->skipRefp()->castNodeArrayDType()) {
 		userIterateChildren(nodep, WidthVP(arrayp->subDTypep(),BOTH).p());
 	    } else {
 		nodep->v3fatalSrc("InitArray on non-array");
diff --git a/test_regress/t/t_initarray_nonarray.pl b/test_regress/t/t_initarray_nonarray.pl
new file mode 100755
index 000000000..385b6a57e
--- /dev/null
+++ b/test_regress/t/t_initarray_nonarray.pl
@@ -0,0 +1,14 @@
+#!/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.
+
+compile (
+    );
+
+ok(1);
+1;
diff --git a/test_regress/t/t_initarray_nonarray.v b/test_regress/t/t_initarray_nonarray.v
new file mode 100644
index 000000000..b1a9f6c8a
--- /dev/null
+++ b/test_regress/t/t_initarray_nonarray.v
@@ -0,0 +1,26 @@
+// DESCRIPTION: Verilator: Verilog Test module
+//
+// The code here is used to trigger Verilator internal error
+// "InitArray on non-array"
+//
+// This file ONLY is placed into the Public Domain, for any use,
+// without warranty, 2017 by Jie Xu.
+
+typedef logic [7:0]  mask_t [7:0];
+
+// parameter logic [7:0] IMP_MASK[7:0] = '{8'hE1, 8'h03, 8'h07, 8'h3F, 8'h33, 8'hC3, 8'hC3, 8'h37};
+
+parameter mask_t IMP_MASK = '{8'hE1, 8'h03, 8'h07, 8'h3F, 8'h33, 8'hC3, 8'hC3, 8'h37};
+
+module t (/*AUTOARG*/
+   // Inputs
+   clk
+   );
+   input clk;
+
+   mask_t a;
+   //logic [7:0] a[7:0];
+
+   assign a = IMP_MASK;
+
+endmodule