diff --git a/src/detect.c b/src/detect.c
index 973aa370e4..0541339a41 100644
--- a/src/detect.c
+++ b/src/detect.c
@@ -764,7 +764,6 @@ static inline void DetectPrefilterMergeSort(DetectEngineCtx *de_ctx,
 }
 
 #define SMS_USE_FLOW_SGH        0x01
-#define SMS_USED_PM             0x02
 
 static inline void
 DetectPrefilterBuildNonPrefilterList(DetectEngineThreadCtx *det_ctx, SignatureMask mask)