diff --git a/src/test/pmempool_transform/TEST10 b/src/test/pmempool_transform/TEST10
index 23791430713..3bfd1d4db6e 100755
--- a/src/test/pmempool_transform/TEST10
+++ b/src/test/pmempool_transform/TEST10
@@ -56,7 +56,10 @@ expect_abnormal_exit $PMEMPOOL$EXESUFFIX transform \
 # Check metadata by pmempool info
 dump_pool_info $POOLSET_IN >> $LOG_TEMP
 
-mv $LOG_TEMP $LOG
+# Exclude warning messages printed out on the stderr by PMDK in debug
+grep -v -E '\*WARN\*' $LOG_TEMP > $LOG
+rm $LOG_TEMP
+
 check
 
 pass
diff --git a/src/test/pmempool_transform/TEST5 b/src/test/pmempool_transform/TEST5
index 929bd3838b5..7a947d6e749 100755
--- a/src/test/pmempool_transform/TEST5
+++ b/src/test/pmempool_transform/TEST5
@@ -93,7 +93,7 @@ dump_pool_info $DIR/testfile02 >> $LOG_TEMP
 dump_pool_info $DIR/testfile10 >> $LOG_TEMP
 
 # Exclude error messages printed out on the stderr by PMDK in debug
-fgrep -v "*ERROR*" $LOG_TEMP > $LOG
+grep -v -E '\*ERROR\*|\*WARN\*' $LOG_TEMP > $LOG
 rm $LOG_TEMP
 
 check
diff --git a/src/test/pmempool_transform/TEST6 b/src/test/pmempool_transform/TEST6
index 91bde3c12a8..27764b07df9 100755
--- a/src/test/pmempool_transform/TEST6
+++ b/src/test/pmempool_transform/TEST6
@@ -72,7 +72,7 @@ expect_abnormal_exit $PMEMPOOL$EXESUFFIX transform \
 dump_pool_info $POOLSET_OUT1 >> $LOG_TEMP
 
 # Exclude error messages printed out on the stderr by PMDK in debug
-fgrep -v "*ERROR*" $LOG_TEMP > $LOG
+grep -v -E '\*ERROR\*|\*WARN\*' $LOG_TEMP > $LOG
 rm $LOG_TEMP
 
 check