diff --git a/src/Convert/Struct.hs b/src/Convert/Struct.hs
index 2e131a8..7b86fae 100644
--- a/src/Convert/Struct.hs
+++ b/src/Convert/Struct.hs
@@ -271,6 +271,19 @@ convertAsgn structs types (lhs, expr) =
         convertExpr (IntegerVector t sg (r:rs)) (Pattern [(":default", e)]) =
             Repeat (rangeSize r) [e']
             where e' = convertExpr (IntegerVector t sg rs) e
+        -- TODO: This is a conversion for concat array literals with elements
+        -- that are unsized numbers. This probably belongs somewhere else.
+        convertExpr (t @ IntegerVector{}) (Concat exprs) =
+            if all isUnsizedNumber exprs
+                then Concat exprs'
+                else Concat exprs
+            where
+                size = DimsFn FnBits (Left $ dropInnerTypeRange t)
+                caster = Cast (Right size)
+                exprs' = map caster exprs
+                isUnsizedNumber :: Expr -> Bool
+                isUnsizedNumber (Number n) = not $ elem '\'' n
+                isUnsizedNumber _ = False
         convertExpr (Struct packing fields (_:rs)) (Concat exprs) =
             Concat $ map (convertExpr (Struct packing fields rs)) exprs
         convertExpr (Struct packing fields (_:rs)) (Bit e _) =
diff --git a/test/basic/integer_array.sv b/test/basic/integer_array.sv
new file mode 100644
index 0000000..a4ff724
--- /dev/null
+++ b/test/basic/integer_array.sv
@@ -0,0 +1,12 @@
+module top;
+    localparam integer B [4] = { 1, 2, 3, 4 };
+    localparam byte    C [4] = { 1, 2, 3, 4 };
+    localparam bit     D [4] = { 1, 2, 3, 4 };
+    initial begin
+`define PRINT(X) \
+        $display("%b %2d %2d", {X[0], X[1], X[2], X[3]}, $bits(X), $bits(X[0]));
+        `PRINT(B);
+        `PRINT(C);
+        `PRINT(D);
+    end
+endmodule
diff --git a/test/basic/integer_array.v b/test/basic/integer_array.v
new file mode 100644
index 0000000..d68ab85
--- /dev/null
+++ b/test/basic/integer_array.v
@@ -0,0 +1,10 @@
+module top;
+    localparam [0:127] B = { 32'h1, 32'h2, 32'h3, 32'h4 };
+    localparam [0:31] C = { 8'h1, 8'h2, 8'h3, 8'h4 };
+    localparam [0:3] D = { 1'h1, 1'h0, 1'h1, 1'h0 };
+    initial begin
+        $display("%b %2d %2d", B, $bits(B), 32);
+        $display("%b %2d %2d", C, $bits(C), 8);
+        $display("%b %2d %2d", D, $bits(D), 1);
+    end
+endmodule