diff --git a/ide/lazarusidestrconsts.pas b/ide/lazarusidestrconsts.pas
index 0d43e30161..37ef8905e4 100644
--- a/ide/lazarusidestrconsts.pas
+++ b/ide/lazarusidestrconsts.pas
@@ -3850,6 +3850,7 @@ resourcestring
     +'called, but no package is registering.';
   lisPkgSysUnitName = '%s%sUnit Name: %s%s%s';
   lisPkgSysFileName = '%s%sFile Name: %s%s%s';
+  lisPkgSysLPKFilename = '%s%slpk file: %s%s%s';
   lisPkgSysPackageRegistrationError = 'Package registration error';
   lisPkgSysTheRTLFreePascalComponentLibraryProvidesTheBase = 'The RTL - '
     +'The Run-Time Library is the basis of all Free Pascal programs.';
diff --git a/packager/packagesystem.pas b/packager/packagesystem.pas
index ddef3fa622..6e007e84ca 100644
--- a/packager/packagesystem.pas
+++ b/packager/packagesystem.pas
@@ -1447,6 +1447,9 @@ begin
     ErrorMsg:=lisPkgSysRegisterUnitWasCalledButNoPackageIsRegistering;
   end else begin
     ErrorMsg:='Package: "'+FRegistrationPackage.IDAsString+'"';
+    if not FRegistrationPackage.AutoCreated then
+      ErrorMsg:=Format(lisPkgSysLPKFilename, [ErrorMsg, #13, '"',
+        FRegistrationPackage.Filename, '"']);
     // current unitname
     if FRegistrationUnitName<>'' then
       ErrorMsg:=Format(lisPkgSysUnitName, [ErrorMsg, #13, '"',