diff --git a/as10k1/as10k1.h b/as10k1/as10k1.h
index b897f3b..1713963 100644
--- a/as10k1/as10k1.h
+++ b/as10k1/as10k1.h
@@ -55,6 +55,6 @@ int tram_table_count=0;
 int gpr_constant_count=0;
 
 char patch_name[PATCH_NAME_SIZE]="NO_NAME";
-int macro_depth=0;
+unsigned int macro_depth=0;