diff --git a/dlls/engine/Makefile b/dlls/engine/Makefile
index a1dcad04..aa3dc119 100755
--- a/dlls/engine/Makefile
+++ b/dlls/engine/Makefile
@@ -31,7 +31,7 @@ CPP_OSX = clang
 LINK =
 
 INCLUDE = -I. -I$(HLSDK) -I$(HLSDK)/common -I$(HLSDK)/dlls -I$(HLSDK)/engine -I$(HLSDK)/game_shared \
-	  -I$(MM_ROOT) -Isdk
+	  -I$(HLSDK)/pm_shared -I$(MM_ROOT) -Isdk
 
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 ### DO NOT EDIT BELOW HERE FOR MOST PROJECTS ###