diff --git a/arch/powerpc/perf/isa207-common.c b/arch/powerpc/perf/isa207-common.c
index b910a5a5d209f..027a2add780e8 100644
--- a/arch/powerpc/perf/isa207-common.c
+++ b/arch/powerpc/perf/isa207-common.c
@@ -462,7 +462,8 @@ int isa207_get_constraint(u64 event, unsigned long *maskp, unsigned long *valp,
 		if (event_is_threshold(event) && is_thresh_cmp_valid(event)) {
 			mask  |= CNST_THRESH_MASK;
 			value |= CNST_THRESH_VAL(event >> EVENT_THRESH_SHIFT);
-		}
+		} else if (event_is_threshold(event))
+			return -1;
 	} else {
 		/*
 		 * Special case for PM_MRK_FAB_RSP_MATCH and PM_MRK_FAB_RSP_MATCH_CYC,