diff --git a/src/port/pg_popcount_avx512_choose.c b/src/port/pg_popcount_avx512_choose.c
index ae3fa3d306..cc3e89e096 100644
--- a/src/port/pg_popcount_avx512_choose.c
+++ b/src/port/pg_popcount_avx512_choose.c
@@ -74,7 +74,7 @@ pg_popcount_avx512_available(void)
 #else
 #error cpuid instruction not available
 #endif
-	if ((exx[2] & (1 << 26)) == 0)	/* xsave */
+	if ((exx[2] & (1 << 27)) == 0)	/* osxsave */
 		return false;
 
 	/* Does XGETBV say the ZMM registers are enabled? */