diff --git a/tests/compat.sh b/tests/compat.sh
index ecc2e58044..bf1691b3b4 100755
--- a/tests/compat.sh
+++ b/tests/compat.sh
@@ -351,7 +351,7 @@ do
         echo Success
     fi
 done
-kill $PROCESS_ID
+kill $PROCESS_ID 2>/dev/null
 wait $PROCESS_ID 2>/dev/null
 
 log "../programs/ssl/ssl_server2 server_addr=0.0.0.0 $P_SERVER_ARGS force_version=$MODE > /dev/null"
@@ -387,7 +387,7 @@ do
     fi
 done
 
-kill $PROCESS_ID
+kill $PROCESS_ID 2>/dev/null
 wait $PROCESS_ID 2>/dev/null
 
 log "../programs/ssl/ssl_server2 server_addr=0.0.0.0 $P_SERVER_ARGS force_version=$MODE"
@@ -555,7 +555,7 @@ do
         echo Success
     fi
 done
-kill $PROCESS_ID
+kill $PROCESS_ID 2>/dev/null
 wait $PROCESS_ID 2>/dev/null
 
 done