diff --git a/build-system/generate-xcode-project.sh b/build-system/generate-xcode-project.sh
index 44665420c2..420ff2b136 100755
--- a/build-system/generate-xcode-project.sh
+++ b/build-system/generate-xcode-project.sh
@@ -17,11 +17,14 @@ fi
 XCODE_VERSION=$(cat "build-system/xcode_version")
 INSTALLED_XCODE_VERSION=$(echo `plutil -p \`xcode-select -p\`/../Info.plist | grep -e CFBundleShortVersionString | sed 's/[^0-9\.]*//g'`)
 
-if [ "$INSTALLED_XCODE_VERSION" != "$XCODE_VERSION" ]; then
-	echo "Xcode $XCODE_VERSION required, $INSTALLED_XCODE_VERSION installed (at $(xcode-select -p))"
-	exit 1
+if [ "$IGNORE_XCODE_VERSION_MISMATCH" = "1" ]; then
+	XCODE_VERSION="$INSTALLED_XCODE_VERSION"
+else
+	if [ "$INSTALLED_XCODE_VERSION" != "$XCODE_VERSION" ]; then
+		echo "Xcode $XCODE_VERSION required, $INSTALLED_XCODE_VERSION installed (at $(xcode-select -p))"
+		exit 1
+	fi
 fi
-
 GEN_DIRECTORY="build-input/gen/project"
 mkdir -p "$GEN_DIRECTORY"