diff --git a/src/V3Width.cpp b/src/V3Width.cpp
index 246c02cad..176f8c00e 100644
--- a/src/V3Width.cpp
+++ b/src/V3Width.cpp
@@ -1139,8 +1139,12 @@ private:
         // The node got setup with the signed/real state of the node.
         // However a later operation may have changed the node->signed w/o changing
         // the number's sign.  So we don't: nodep->dtypeChgSigned(nodep->num().isSigned());
+        if (nodep->didWidthAndSet()) return;
         if (m_vup && m_vup->prelim()) {
-            if (nodep->num().isString()) {
+            if (VN_IS(nodep->dtypep()->skipRefToEnump(), EnumDType)) {
+                // Assume this constant was properly casted ealier
+                // (Otherwise it couldn't have an enum data type)
+            } else if (nodep->num().isString()) {
                 nodep->dtypeSetString();
             } else if (nodep->num().sized()) {
                 nodep->dtypeChgWidth(nodep->num().width(), nodep->num().width());
diff --git a/test_regress/t/t_enum_value_assign.v b/test_regress/t/t_enum_value_assign.v
index 28e55cf02..953245910 100644
--- a/test_regress/t/t_enum_value_assign.v
+++ b/test_regress/t/t_enum_value_assign.v
@@ -19,6 +19,9 @@ module t(/*AUTOARG*/);
    localparam enum_t PARAMVAL1 = VAL1;
    localparam enum_t PARAMVAL1CONST = enum_t'(2);
 
+   typedef enum {I_ZERO, I_ONE, I_TWO} inte_t;
+   localparam inte_t I_PARAM = inte_t'(1);
+
    initial begin
       enum_t e;
       e = VAL01;
@@ -27,6 +30,8 @@ module t(/*AUTOARG*/);
       if (PARAMVAL1 != VAL1) $stop;
       if (PARAMVAL1CONST != VAL1) $stop;
 
+      if (I_PARAM != I_ONE) $stop;
+
       $write("*-* All Finished *-*\n");
       $finish;
    end