diff --git a/src/mesa/slang/slang_compile_struct.h b/src/mesa/slang/slang_compile_struct.h
index 90c5512f4d3..7be6f204e11 100644
--- a/src/mesa/slang/slang_compile_struct.h
+++ b/src/mesa/slang/slang_compile_struct.h
@@ -29,6 +29,9 @@
 extern "C" {
 #endif
 
+#include "main/glheader.h"
+#include "slang_utility.h"
+
 struct slang_function_;
 
 typedef struct slang_struct_scope_