issue #2085 Replace the method PackageOrganizer>>packageOfClass: aClass ifNone: errorBlock by -=-=-=-=-= packageOfClass: aClass ifNone: errorBlock | classCategory | classCategory := aClass category. packages at: classCategory ifPresent: [:v | ^ v]. (classCategory includes: $-) ifTrue: [ packages at: (classCategory copyUpTo: $-) ifPresent: [:v | ^ v] ]. ^ self packages detect: [:ea | ea includesClass: aClass] ifNone: errorBlock -=-=-=-=-= Before this enhancement: [100 timesRepeat: [Object package]] timeToRun => 141 After the fix: => 2 Easy thing to do. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.