diff --git a/java/ql/lib/semmle/code/java/security/TempFileLib.qll b/java/ql/lib/semmle/code/java/security/TempFileLib.qll
index d44ca261277b0..35b4768b8fb68 100644
--- a/java/ql/lib/semmle/code/java/security/TempFileLib.qll
+++ b/java/ql/lib/semmle/code/java/security/TempFileLib.qll
@@ -18,8 +18,8 @@ class MethodFileCreateTempFile extends Method {
  */
 class MethodFileCreatesDirs extends Method {
   MethodFileCreatesDirs() {
-    getDeclaringType() instanceof TypeFile and
-    hasName(["mkdir", "mkdirs"])
+    this.getDeclaringType() instanceof TypeFile and
+    this.hasName(["mkdir", "mkdirs"])
   }
 }