diff --git a/examples/cwebp.c b/examples/cwebp.c
index d47f0be0..716a1117 100644
--- a/examples/cwebp.c
+++ b/examples/cwebp.c
@@ -698,7 +698,7 @@ int main(int argc, const char* argv[]) {
 
   if (argc == 1) {
     HelpShort();
-    FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
+    FREE_WARGV_AND_RETURN(EXIT_FAILURE);
   }
 
   for (c = 1; c < argc; ++c) {
diff --git a/examples/gif2webp.c b/examples/gif2webp.c
index 532cfcf6..2b297428 100644
--- a/examples/gif2webp.c
+++ b/examples/gif2webp.c
@@ -158,7 +158,7 @@ int main(int argc, const char* argv[]) {
 
   if (argc == 1) {
     Help();
-    FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
+    FREE_WARGV_AND_RETURN(EXIT_FAILURE);
   }
 
   for (c = 1; c < argc; ++c) {
diff --git a/examples/img2webp.c b/examples/img2webp.c
index ca1d0fd8..9cfccb43 100644
--- a/examples/img2webp.c
+++ b/examples/img2webp.c
@@ -229,6 +229,8 @@ int main(int argc, const char* argv[]) {
   }
   if (!have_input) {
     fprintf(stderr, "No input file(s) for generating animation!\n");
+    ok = 0;
+    Help();
     goto End;
   }
 
diff --git a/examples/vwebp.c b/examples/vwebp.c
index 7dbda4e2..89e8d8c1 100644
--- a/examples/vwebp.c
+++ b/examples/vwebp.c
@@ -568,7 +568,7 @@ int main(int argc, char* argv[]) {
   if (kParams.file_name == NULL) {
     printf("missing input file!!\n");
     Help();
-    FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
+    FREE_WARGV_AND_RETURN(EXIT_FAILURE);
   }
 
   if (!ImgIoUtilReadFile(kParams.file_name,
diff --git a/examples/webpinfo.c b/examples/webpinfo.c
index 537e3f5a..ba8f1e12 100644
--- a/examples/webpinfo.c
+++ b/examples/webpinfo.c
@@ -1132,7 +1132,7 @@ int main(int argc, const char* argv[]) {
 
   if (argc == 1) {
     Help();
-    FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
+    FREE_WARGV_AND_RETURN(EXIT_FAILURE);
   }
 
   // Parse command-line input.
diff --git a/extras/vwebp_sdl.c b/extras/vwebp_sdl.c
index 04de98f0..1906bf39 100644
--- a/extras/vwebp_sdl.c
+++ b/extras/vwebp_sdl.c
@@ -57,6 +57,12 @@ int main(int argc, char* argv[]) {
 
   INIT_WARGV(argc, argv);
 
+  if (argc == 1) {
+    fprintf(stderr, "Usage: %s [-h] image.webp [more_files.webp...]\n",
+            argv[0]);
+    goto Error;
+  }
+
   for (c = 1; c < argc; ++c) {
     const char* file = NULL;
     const uint8_t* webp = NULL;