diff --git a/lib/redmine/scm/adapters/abstract_adapter.rb b/lib/redmine/scm/adapters/abstract_adapter.rb
index fec9de5c1..81a24af81 100644
--- a/lib/redmine/scm/adapters/abstract_adapter.rb
+++ b/lib/redmine/scm/adapters/abstract_adapter.rb
@@ -24,6 +24,10 @@ module Redmine
       end
 
       class AbstractAdapter #:nodoc:
+
+        # raised if scm command exited with error, e.g. unknown revision.
+        class ScmCommandAborted < CommandFailed; end
+
         class << self
           def client_command
             ""
diff --git a/lib/redmine/scm/adapters/cvs_adapter.rb b/lib/redmine/scm/adapters/cvs_adapter.rb
index ffa241e7c..16030a4d5 100644
--- a/lib/redmine/scm/adapters/cvs_adapter.rb
+++ b/lib/redmine/scm/adapters/cvs_adapter.rb
@@ -25,9 +25,6 @@ module Redmine
         # CVS executable name
         CVS_BIN = Redmine::Configuration['scm_cvs_command'] || "cvs"
 
-        # raised if scm command exited with error, e.g. unknown revision.
-        class ScmCommandAborted < CommandFailed; end
-
         class << self
           def client_command
             @@bin    ||= CVS_BIN
diff --git a/lib/redmine/scm/adapters/git_adapter.rb b/lib/redmine/scm/adapters/git_adapter.rb
index ad04b62cb..0549808e9 100644
--- a/lib/redmine/scm/adapters/git_adapter.rb
+++ b/lib/redmine/scm/adapters/git_adapter.rb
@@ -25,9 +25,6 @@ module Redmine
         # Git executable name
         GIT_BIN = Redmine::Configuration['scm_git_command'] || "git"
 
-        # raised if scm command exited with error, e.g. unknown revision.
-        class ScmCommandAborted < CommandFailed; end
-
         class << self
           def client_command
             @@bin    ||= GIT_BIN