diff --git a/releng/releng_cxx b/releng/releng_cxx
index 43c484b2..4a9c85ba 100755
--- a/releng/releng_cxx
+++ b/releng/releng_cxx
@@ -20,7 +20,7 @@ CC=g++
 # check data dir
 if [ -d "${GEN_DATA_DIR}" ]; then
  printf "\n${SELF}: directory %s exists!" ${GEN_DATA_DIR}
- printf "\n${SELF}: use '${SELF} -c1' to remove.\n"
+ printf "\n${SELF}: use '${SELF} -c' to remove.\n"
  exit 5
 else
  mkdir "${GEN_DATA_DIR}"
diff --git a/releng/releng_isocontent b/releng/releng_isocontent
index 30024d82..7ec59a03 100755
--- a/releng/releng_isocontent
+++ b/releng/releng_isocontent
@@ -23,7 +23,7 @@ fi
 # check data dir, if any and after checking -x xorriso
 if [ -d "${GEN_DATA_DIR}" ]; then
  printf "\n${SELF}: directory %s exists!" ${GEN_DATA_DIR}
- printf "\n${SELF}: use '${SELF} -c1' to remove.\n"
+ printf "\n${SELF}: use '${SELF} -c' to remove.\n"
  exit 8
 else
  mkdir "${GEN_DATA_DIR}"
diff --git a/releng/releng_isojigdo b/releng/releng_isojigdo
index fc1b0d2a..6010c433 100755
--- a/releng/releng_isojigdo
+++ b/releng/releng_isojigdo
@@ -22,7 +22,7 @@ fi
 # check data dir, if any and after checking -x xorriso
 if [ -d "${GEN_DATA_DIR}" ]; then
  printf "\n${SELF}: directory %s exists!" ${GEN_DATA_DIR}
- printf "\n${SELF}: use '${SELF} -c1' to remove.\n"
+ printf "\n${SELF}: use '${SELF} -c' to remove.\n"
  exit 1
 else
  mkdir "${GEN_DATA_DIR}"
diff --git a/releng/releng_printsize b/releng/releng_printsize
index 4a2e905c..29a2f606 100755
--- a/releng/releng_printsize
+++ b/releng/releng_printsize
@@ -24,7 +24,7 @@ fi
 # check data dir, if any and after checking -x xorriso
 if [ -d "${GEN_DATA_DIR}" ]; then
  printf "\n${SELF}: directory %s exists!" ${GEN_DATA_DIR}
- printf "\n${SELF}: use '${SELF} -c1' to remove.\n"
+ printf "\n${SELF}: use '${SELF} -c' to remove.\n"
  exit 8
 else
  mkdir "${GEN_DATA_DIR}"
diff --git a/releng/template_new_releng b/releng/template_new_releng
index 6265a28c..a01c8d4d 100755
--- a/releng/template_new_releng
+++ b/releng/template_new_releng
@@ -26,7 +26,7 @@ fi
 # check data dir, if any and after checking -x xorriso
 if [ -d "${GEN_DATA_DIR}" ]; then
  printf "\n${SELF}: directory %s exists!" ${GEN_DATA_DIR}
- printf "\n${SELF}: use '${SELF} -c1' to remove.\n"
+ printf "\n${SELF}: use '${SELF} -c' to remove.\n"
  exit 8
 else
  mkdir "${GEN_DATA_DIR}"