diff --git a/av1/encoder/encoder.c b/av1/encoder/encoder.c
index c58215e..04e2bb3 100644
--- a/av1/encoder/encoder.c
+++ b/av1/encoder/encoder.c
@@ -5135,7 +5135,7 @@
 }
 
 #if !CONFIG_REALTIME_ONLY
-#define STRICT_PSNR_DIFF_THRESH 1.0
+#define STRICT_PSNR_DIFF_THRESH 0.9
 // Encode key frame with/without screen content tools to determine whether
 // screen content tools should be enabled for this key frame group or not.
 // The first encoding is without screen content tools.