diff --git a/build/macos/1_build-deps-macports.sh b/build/macos/1_build-deps-macports.sh
index 3657a91c42..21316bb1a6 100644
--- a/build/macos/1_build-deps-macports.sh
+++ b/build/macos/1_build-deps-macports.sh
@@ -14,6 +14,8 @@ elif [ $(basename "$PWD") = 'macos' ]; then
   cd ../../..
 fi
 if [ -z "$GITLAB_CI" ]; then
+  which git >/dev/null 2>&1 || { printf '\033[31m(ERROR)\033[0m: git is required for this script. Please, read: https://developer.gimp.org/core/setup/git/#source-from-git\n'; exit 1; }
+
   GIT_DEPTH='1'
 
   PARENT_DIR='/..'
diff --git a/build/windows/1_build-deps-msys2.ps1 b/build/windows/1_build-deps-msys2.ps1
index 1ec2bee35c..3baa24899f 100644
--- a/build/windows/1_build-deps-msys2.ps1
+++ b/build/windows/1_build-deps-msys2.ps1
@@ -14,6 +14,8 @@ elseif (Test-Path 1_build-deps-msys2.ps1 -Type Leaf)
   }
 if (-not $GITLAB_CI)
   {
+    if (-not (Get-Command "git" -ErrorAction SilentlyContinue)) { Write-Host '(ERROR): git is required for this script. Please, read: https://developer.gimp.org/core/setup/git/#source-from-git' -ForegroundColor Red; exit 1 }
+
     $GIT_DEPTH = '1'
 
     $PARENT_DIR = '\..'