diff --git a/src/Convert/Logic.hs b/src/Convert/Logic.hs
index 3ebbf88..db64a26 100644
--- a/src/Convert/Logic.hs
+++ b/src/Convert/Logic.hs
@@ -206,7 +206,7 @@ traverseStmtM (Timing timing stmt) =
     return $ Timing timing stmt
 traverseStmtM (Subroutine (Ident f) args) = do
     case args of
-        Args [_, Ident x, _] [] ->
+        Args (_ : Ident x : _) [] ->
             if f == "$readmemh" || f == "$readmemb"
                 then collectLHSM $ LHSIdent x
                 else return ()
diff --git a/src/Convert/UnpackedArray.hs b/src/Convert/UnpackedArray.hs
index bb549ed..bf8e2fc 100644
--- a/src/Convert/UnpackedArray.hs
+++ b/src/Convert/UnpackedArray.hs
@@ -94,6 +94,8 @@ traverseStmtM =
     traverseStmtArgsM
 
 traverseStmtArgsM :: Stmt -> ST Stmt
+traverseStmtArgsM stmt @ (Subroutine (Ident ('$' : _)) _) =
+    return stmt
 traverseStmtArgsM stmt @ (Subroutine _ (Args args [])) =
     mapM_ flatUsageM args >> return stmt
 traverseStmtArgsM stmt = return stmt
diff --git a/test/core/tf_unpacked_input.mem b/test/core/tf_unpacked_input.mem
new file mode 100644
index 0000000..987f338
--- /dev/null
+++ b/test/core/tf_unpacked_input.mem
@@ -0,0 +1 @@
+ff aa bb cc
diff --git a/test/core/tf_unpacked_input.sv b/test/core/tf_unpacked_input.sv
index c2234c7..d452654 100644
--- a/test/core/tf_unpacked_input.sv
+++ b/test/core/tf_unpacked_input.sv
@@ -20,4 +20,7 @@ module top;
         #1 arr2[2] = 9; dump(arr2);
         #1 arr2[3] = 7; dump(arr2);
     end
+    byte arr3 [4];
+    wire [31:0] arr3_flat = {arr3[0], arr3[1], arr3[2], arr3[3]};
+    initial $readmemh("tf_unpacked_input.mem", arr3);
 endmodule
diff --git a/test/core/tf_unpacked_input.v b/test/core/tf_unpacked_input.v
index 384af07..d00e71e 100644
--- a/test/core/tf_unpacked_input.v
+++ b/test/core/tf_unpacked_input.v
@@ -19,4 +19,7 @@ module top;
         #1 arr2[2] = 9; dump(arr2);
         #1 arr2[3] = 7; dump(arr2);
     end
+    reg [7:0] arr3 [0:3];
+    wire [31:0] arr3_flat = {arr3[0], arr3[1], arr3[2], arr3[3]};
+    initial $readmemh("tf_unpacked_input.mem", arr3);
 endmodule