diff --git a/dlls/setupapi/parser.c b/dlls/setupapi/parser.c
index 6ddc1f2..ea410f8 100644
--- a/dlls/setupapi/parser.c
+++ b/dlls/setupapi/parser.c
@@ -1231,7 +1231,7 @@
     struct inf_file *file = hinf;
     unsigned int i;
 
-    if (!file) return;
+    if (!hinf || (hinf == INVALID_HANDLE_VALUE)) return;
 
     for (i = 0; i < file->nb_sections; i++) HeapFree( GetProcessHeap(), 0, file->sections[i] );
     HeapFree( GetProcessHeap(), 0, file->filename );