diff --git a/CHANGES b/CHANGES
index a7318a36..ccbdeb62 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1445,3 +1445,6 @@ Version history
     - better propagate the raw option modifier (!) to expanded expressions
     - don't fail enumerating child expressions if one fails, show error for this item instead
   * dmdserver: fixed intellisense on TemplateInstance!Argument
+
+2025-07-15 version 1.4.1
+  * dmdserver: do not display invalid struct size and alignment in tool tip
diff --git a/VERSION b/VERSION
index 5435b41c..8ceece45 100644
--- a/VERSION
+++ b/VERSION
@@ -1,5 +1,5 @@
 #define VERSION_MAJOR      1
 #define VERSION_MINOR      4
 #define VERSION_REVISION   1
-#define VERSION_BETA       -beta
-#define VERSION_BUILD      4
+#define VERSION_BETA       
+#define VERSION_BUILD      0
diff --git a/vdc/dmdserver/dmd b/vdc/dmdserver/dmd
index 11d592ed..09db2a83 160000
--- a/vdc/dmdserver/dmd
+++ b/vdc/dmdserver/dmd
@@ -1 +1 @@
-Subproject commit 11d592ed08822900b6e8b3c209314d3a0ac76b68
+Subproject commit 09db2a83f0098572d59e7ffdbfc8bf16383a490f
diff --git a/vdc/dmdserver/semvisitor.d b/vdc/dmdserver/semvisitor.d
index bd824600..73e7be02 100644
--- a/vdc/dmdserver/semvisitor.d
+++ b/vdc/dmdserver/semvisitor.d
@@ -1284,8 +1284,15 @@ bool showSizeAndAlignment = false;
 string tipSizeAndAlignment(Type t)
 {
 	if (auto cd = t.isClassHandle())
+	{
+		if (cd.sizeok != Sizeok.done)
+			return "";
 		return "Size: " ~ to!string(cd.structsize) ~ ", Alignment: " ~ to!string(cd.alignsize);
-	return "Size: " ~ to!string(t.size()) ~ ", Alignment: " ~ to!string(t.alignsize());
+	}
+	auto sz = t.size();
+	if (sz == SIZE_INVALID)
+		return "";
+	return "Size: " ~ to!string(sz) ~ ", Alignment: " ~ to!string(t.alignsize());
 }
 
 TipData tipForType(Type t)