diff --git a/src/scripts/extensions/add_extensions.sh b/src/scripts/extensions/add_extensions.sh
index 69b99fc4..3a3375a3 100644
--- a/src/scripts/extensions/add_extensions.sh
+++ b/src/scripts/extensions/add_extensions.sh
@@ -50,7 +50,7 @@ enable_extension() {
     enable_cache_extension_dependencies "$1" "$2"
     if command -v phpenmod >/dev/null 2>&1; then
       mod="${ini_dir:?}"/../mods-available/"$1".ini
-      [ ! -e "$mod" ] || (echo "; priority=${3:'20'}"; echo "$2=${ext_dir:?}/$1.so") | sudo tee "$mod" >/dev/null
+      [ -e "$mod" ] || (echo "; priority=${3:'20'}"; echo "$2=${ext_dir:?}/$1.so") | sudo tee "$mod" >/dev/null
       sudo phpenmod -v "$version" "$1" >/dev/null 2>&1
     else
       echo "$2=${ext_dir:?}/$1.so" | sudo tee -a "${pecl_file:-${ini_file[@]}}" >/dev/null