2 files changed, 2 insertions, 2 deletions
diff --git a/src/bin/jp3d/convert.c b/src/bin/jp3d/convert.c
index 7d802445..23fd70b0 100644
--- a/src/bin/jp3d/convert.c
+++ b/src/bin/jp3d/convert.c
@@ -788,7 +788,7 @@ int volumetobin(opj_volume_t * volume, char *outfile)
 
     fclose(fdest);
 
-    sprintf(name, "%s.img", outfile);
+    snprintf(name, sizeof(name), "%s.img", outfile);
     fimgdest = fopen(name, "w");
     if (!fimgdest) {
         fprintf(stdout, "[ERROR] Failed to open %s for writing\n", name);
diff --git a/src/bin/mj2/opj_mj2_extract.c b/src/bin/mj2/opj_mj2_extract.c
index a062e17d..9384dc6d 100644
--- a/src/bin/mj2/opj_mj2_extract.c
+++ b/src/bin/mj2/opj_mj2_extract.c
@@ -86,7 +86,7 @@ int main(int argc, char *argv[])
     mj2_dparameters_t parameters;
 
     if (argc != 3) {
-        printf("Usage: %s mj2filename output_location\n", argv[0]);
+        printf("Usage: %s mj2filename output_prefix\n", argv[0]);
         printf("Example: %s foreman.mj2 output/foreman\n", argv[0]);
         return 1;
     }