diff --git a/img-gen-all.sh b/img-gen-all.sh
index 449439a6..aa289ccb 100755
--- a/img-gen-all.sh
+++ b/img-gen-all.sh
@@ -37,7 +37,7 @@ sudo mount ${LOOPX}p3 "/tmp/p3"
 
 [[ ! -f "brs/bzImage-arc" || ! -f "brs/initrd-arc" ]] && return 1
 
-VERSION=$(date +'%y.%-m.dev')
+VERSION=$(date +'%y.%m.dev')
 echo "${VERSION}" >files/p1/ARC-VERSION
 echo "${VERSION}" >VERSION
 echo "stable" >files/p1/ARC-BRANCH
@@ -82,7 +82,7 @@ sudo mount ${LOOPX}p3 "/tmp/p3"
 
 [[ ! -f "brx/bzImage-arc" || ! -f "brx/initrd-arc" ]] && return 1
 
-VERSION=$(date +'%y.%-m.dev')
+VERSION=$(date +'%y.%m.dev')
 echo "${VERSION}" >files/p1/ARC-VERSION
 echo "${VERSION}" >VERSION
 echo "next" >files/p1/ARC-BRANCH
diff --git a/img-gen-next.sh b/img-gen-next.sh
index 2b300b98..f56d8202 100755
--- a/img-gen-next.sh
+++ b/img-gen-next.sh
@@ -36,7 +36,7 @@ sudo mount ${LOOPX}p3 "/tmp/p3"
 
 [[ ! -f "brx/bzImage-arc" || ! -f "brx/initrd-arc" ]] && return 1
 
-VERSION=$(date +'%y.%-m.dev')
+VERSION=$(date +'%y.%m.dev')
 echo "${VERSION}" >files/p1/ARC-VERSION
 echo "${VERSION}" >VERSION
 echo "next" >files/p1/ARC-BRANCH
diff --git a/img-gen.sh b/img-gen.sh
index 1aa70a69..667559ea 100755
--- a/img-gen.sh
+++ b/img-gen.sh
@@ -36,7 +36,7 @@ sudo mount ${LOOPX}p3 "/tmp/p3"
 
 [[ ! -f "brs/bzImage-arc" || ! -f "brs/initrd-arc" ]] && return 1
 
-VERSION=$(date +'%y.%-m.dev')
+VERSION=$(date +'%y.%m.dev')
 echo "${VERSION}" >files/p1/ARC-VERSION
 echo "${VERSION}" >VERSION
 echo "stable" >files/p1/ARC-BRANCH