--- a/SystemBrowser.st	Thu Mar 05 11:16:57 2020 +0100
+++ b/SystemBrowser.st	Thu Mar 05 11:17:15 2020 +0100
@@ -2539,7 +2539,7 @@
 '] ifFalse:['']),'
 Please check the setting of your packagePath, which contains a collection of pathNames.
 The system searches those directories for a package-subdirectories,
-which should either contain the classes source file.
+which should either contain the class''s source file.
 Also, check if that directory and/or sourceFile grants read access.
 The packagePath can be accessed via
     Smalltalk packagePath