diff --git a/ql/src/semmle/go/frameworks/Revel.qll b/ql/src/semmle/go/frameworks/Revel.qll
index 7a8d2205fff..592f5aa394b 100644
--- a/ql/src/semmle/go/frameworks/Revel.qll
+++ b/ql/src/semmle/go/frameworks/Revel.qll
@@ -74,7 +74,7 @@ module Revel {
   }
 
   private class ServerCookieGetValue extends TaintTracking::FunctionModel, Method {
-    ServerCookieGetValue() { this.hasQualifiedName(packagePath(), "ServerCookie", "GetValue") }
+    ServerCookieGetValue() { this.implements(packagePath(), "ServerCookie", "GetValue") }
 
     override predicate hasTaintFlow(FunctionInput inp, FunctionOutput outp) {
       inp.isReceiver() and outp.isResult()
@@ -83,7 +83,7 @@ module Revel {
 
   private class ServerMultipartFormGetFiles extends TaintTracking::FunctionModel, Method {
     ServerMultipartFormGetFiles() {
-      this.hasQualifiedName(packagePath(), "ServerMultipartForm", ["GetFiles", "GetValues"])
+      this.implements(packagePath(), "ServerMultipartForm", ["GetFiles", "GetValues"])
     }
 
     override predicate hasTaintFlow(FunctionInput inp, FunctionOutput outp) {
diff --git a/ql/src/semmle/go/security/ExternalAPIs.qll b/ql/src/semmle/go/security/ExternalAPIs.qll
index 480f980c7ee..64a535e9f98 100644
--- a/ql/src/semmle/go/security/ExternalAPIs.qll
+++ b/ql/src/semmle/go/security/ExternalAPIs.qll
@@ -34,9 +34,9 @@ private class DefaultSafeExternalAPIFunction extends SafeExternalAPIFunction {
     this.(Method).hasQualifiedName(package("golang.org/x/oauth2", ""), "Config", "Exchange") or
     this.hasQualifiedName(package("golang.org/x/crypto", "bcrypt"), "CompareHashAndPassword") or
     this.hasQualifiedName(package("golang.org/x/crypto", "bcrypt"), "GenerateFromPassword") or
-    this.(Method).hasQualifiedName("hash", "Hash", "Sum") or
-    this.(Method).hasQualifiedName("hash", "Hash32", "Sum32") or
-    this.(Method).hasQualifiedName("hash", "Hash64", "Sum64") or
+    this.(Method).implements("hash", "Hash", "Sum") or
+    this.(Method).implements("hash", "Hash32", "Sum32") or
+    this.(Method).implements("hash", "Hash64", "Sum64") or
     this.hasQualifiedName("crypto/sha256", "Sum256") or
     this.hasQualifiedName("crypto/md5", "Sum") or
     this.hasQualifiedName("crypto/sha1", "Sum")