diff --git a/scripts/pre-commit.php b/scripts/pre-commit.php
index b41074785d..ff1962b99a 100755
--- a/scripts/pre-commit.php
+++ b/scripts/pre-commit.php
@@ -13,7 +13,7 @@ if (getenv('FILES')) {
     $changed_files = exec("git diff --diff-filter=d --name-only master | tr '\n' ' '|sed 's/,*$//g'");
 }
 
-$changed_files = explode(' ', $changed_files);
+$changed_files = $changed_files ? explode(' ', $changed_files) : [];
 
 $map = [
     'docs'   => 0,
@@ -122,13 +122,13 @@ if (check_opt($options, 'db')) {
 }
 
 // No php files, skip the php checks.
-if ($map['php'] === 0) {
+if (!empty($changed_files) && $map['php'] === 0) {
     putenv('SKIP_LINT_CHECK=1');
     putenv('SKIP_STYLE_CHECK=1');
 }
 
 // If we have no php files and no OS' found then also skip unit checks.
-if ($map['php'] === 0 && empty($map['os']) && !$os) {
+if (!empty($changed_files) && $map['php'] === 0 && empty($map['os']) && !$os) {
     putenv('SKIP_UNIT_CHECK=1');
 }