diff --git a/src/bin/jp2/opj_compress.c b/src/bin/jp2/opj_compress.c
index 3134ffaa..b940d4e5 100644
--- a/src/bin/jp2/opj_compress.c
+++ b/src/bin/jp2/opj_compress.c
@@ -487,7 +487,7 @@ static unsigned int get_num_images(char *imgdirpath)
         }
         num_images++;
         if (num_images == 0) {
-            fprintf(stderr,"Too many files in folder %s\n", imgdirpath);
+            fprintf(stderr, "Too many files in folder %s\n", imgdirpath);
         }
     }
     closedir(dir);
diff --git a/src/bin/jp2/opj_decompress.c b/src/bin/jp2/opj_decompress.c
index 64eee330..11e85012 100644
--- a/src/bin/jp2/opj_decompress.c
+++ b/src/bin/jp2/opj_decompress.c
@@ -390,7 +390,7 @@ int get_num_images(char *imgdirpath)
         }
         num_images++;
         if (num_images == 0) {
-            fprintf(stderr,"Too many files in folder %s\n", imgdirpath);
+            fprintf(stderr, "Too many files in folder %s\n", imgdirpath);
         }
     }
     closedir(dir);
diff --git a/src/bin/jp2/opj_dump.c b/src/bin/jp2/opj_dump.c
index f7c47477..9489afad 100644
--- a/src/bin/jp2/opj_dump.c
+++ b/src/bin/jp2/opj_dump.c
@@ -142,7 +142,7 @@ static int get_num_images(char *imgdirpath)
         }
         num_images++;
         if (num_images == 0) {
-            fprintf(stderr,"Too many files in folder %s\n", imgdirpath);
+            fprintf(stderr, "Too many files in folder %s\n", imgdirpath);
         }
     }
     closedir(dir);