diff --git a/libavcodec/rangecoder.c b/libavcodec/rangecoder.c
index 33984aa207..7d2d14defd 100644
--- a/libavcodec/rangecoder.c
+++ b/libavcodec/rangecoder.c
@@ -137,11 +137,8 @@ int main(void)
     for (i = 0; i < SIZE; i++)
         r[i] = av_lfg_get(&prng) % 7;
 
-    for (i = 0; i < SIZE; i++) {
-START_TIMER
+    for (i = 0; i < SIZE; i++)
         put_rac(&c, state, r[i] & 1);
-STOP_TIMER("put_rac")
-    }
 
     ff_rac_terminate(&c);
 
@@ -149,14 +146,11 @@ STOP_TIMER("put_rac")
 
     memset(state, 128, sizeof(state));
 
-    for (i = 0; i < SIZE; i++) {
-START_TIMER
+    for (i = 0; i < SIZE; i++)
         if ((r[i] & 1) != get_rac(&c, state)) {
             av_log(NULL, AV_LOG_ERROR, "rac failure at %d\n", i);
             return 1;
         }
-STOP_TIMER("get_rac")
-    }
 
     return 0;
 }
diff --git a/tests/md5.sh b/tests/md5.sh
index e21e5c37dd..5e2528cc75 100644
--- a/tests/md5.sh
+++ b/tests/md5.sh
@@ -1,6 +1,6 @@
 # try to find an md5 program
 
-if [ X"$(echo | md5sum 2> /dev/null)" != X ]; then
+if [ X"$(echo | md5sum -b 2> /dev/null)" != X ]; then
     do_md5sum() { md5sum -b $1; }
 elif [ X"$(echo | command md5 2> /dev/null)" != X ]; then
     do_md5sum() { command md5 $1 | sed 's#MD5 (\(.*\)) = \(.*\)#\2 *\1#'; }
diff --git a/tests/tiny_psnr.c b/tests/tiny_psnr.c
index b912061310..264aa4d169 100644
--- a/tests/tiny_psnr.c
+++ b/tests/tiny_psnr.c
@@ -231,7 +231,7 @@ int main(int argc, char *argv[])
         } else {
             char *end;
             len = strtol(argv[3], &end, 0);
-            if (*end || len > 2) {
+            if (*end || len < 1 || len > 2) {
                 fprintf(stderr, "Unsupported sample format: %s\n", argv[3]);
                 return 1;
             }