diff --git a/paludis/bashrc b/paludis/bashrc
index 43f4670..cbc7f88 100644
--- a/paludis/bashrc
+++ b/paludis/bashrc
@@ -219,7 +219,8 @@ fi
 
 
 # O3
-if [[ "${CATEGORY}" == "games-"* ]]
+if [[ "${CATEGORY}" == "games-"* &&
+	"${CATEGORY}/${PN}" != "games-engines/OpenJK" ]]
 then
 	CFLAGS="${CFLAGS} -O3"
 	CXXFLAGS="${CXXFLAGS} -O3"