diff --git a/suite/profile/migration/src/nsNetscapeProfileMigratorBase.cpp b/suite/profile/migration/src/nsNetscapeProfileMigratorBase.cpp
index ba6dbe0d335..a95f668c28a 100644
--- a/suite/profile/migration/src/nsNetscapeProfileMigratorBase.cpp
+++ b/suite/profile/migration/src/nsNetscapeProfileMigratorBase.cpp
@@ -836,12 +836,12 @@ nsNetscapeProfileMigratorBase::CopyPasswords(PRBool aReplace)
 }
 
 nsresult
-nsNetscapeProfileMigratorBase::CopyUserContentSheet()
+nsNetscapeProfileMigratorBase::CopyUserSheet(const char* aFileName)
 {
   nsCOMPtr<nsIFile> sourceUserContent;
   mSourceProfile->Clone(getter_AddRefs(sourceUserContent));
   sourceUserContent->Append(DIR_NAME_CHROME);
-  sourceUserContent->AppendNative(NS_LITERAL_CSTRING(FILE_NAME_USERCONTENT));
+  sourceUserContent->AppendNative(nsDependentCString(aFileName));
 
   PRBool exists = PR_FALSE;
   sourceUserContent->Exists(&exists);
@@ -853,14 +853,14 @@ nsNetscapeProfileMigratorBase::CopyUserContentSheet()
   targetUserContent->Append(DIR_NAME_CHROME);
   nsCOMPtr<nsIFile> targetChromeDir;
   targetUserContent->Clone(getter_AddRefs(targetChromeDir));
-  targetUserContent->AppendNative(NS_LITERAL_CSTRING(FILE_NAME_USERCONTENT));
+  targetUserContent->AppendNative(nsDependentCString(aFileName));
 
   targetUserContent->Exists(&exists);
   if (exists)
     targetUserContent->Remove(PR_FALSE);
 
-  return sourceUserContent->CopyTo(targetChromeDir,
-                                   NS_LITERAL_STRING(FILE_NAME_USERCONTENT));
+  return sourceUserContent->CopyToNative(targetChromeDir,
+                                         nsDependentCString(aFileName));
 }
 
 nsresult
diff --git a/suite/profile/migration/src/nsNetscapeProfileMigratorBase.h b/suite/profile/migration/src/nsNetscapeProfileMigratorBase.h
index 8750f321bd4..016b7ddb51a 100644
--- a/suite/profile/migration/src/nsNetscapeProfileMigratorBase.h
+++ b/suite/profile/migration/src/nsNetscapeProfileMigratorBase.h
@@ -158,7 +158,7 @@ protected:
   nsresult CopyCookies(PRBool aReplace);
   nsresult CopyFormData(PRBool aReplace);
   nsresult CopyPasswords(PRBool aReplace);
-  nsresult CopyUserContentSheet();
+  nsresult CopyUserSheet(const char* aFileName);
   nsresult GetSchemaValueFileName(PRBool aReplace, char** aFileName);
   nsresult GetSignonFileName(PRBool aReplace, char** aFileName);
   nsresult ImportNetscapeCookies(nsIFile* aCookiesFile);
diff --git a/suite/profile/migration/src/nsSeamonkeyProfileMigrator.cpp b/suite/profile/migration/src/nsSeamonkeyProfileMigrator.cpp
index 0e7689885a2..3190509456a 100644
--- a/suite/profile/migration/src/nsSeamonkeyProfileMigrator.cpp
+++ b/suite/profile/migration/src/nsSeamonkeyProfileMigrator.cpp
@@ -62,6 +62,7 @@
 #define FILE_NAME_USER_PREFS      "user.js"
 #define FILE_NAME_PERSONALDICTIONARY "persdict.dat"
 #define FILE_NAME_MAILVIEWS       "mailViews.dat"
+#define FILE_NAME_USERCHROME      "userChrome.css"
 
 NS_IMPL_ISUPPORTS2(nsSeamonkeyProfileMigrator, nsISuiteProfileMigrator,
                    nsITimerCallback)
@@ -717,7 +718,9 @@ nsSeamonkeyProfileMigrator::CopyPreferences(PRBool aReplace)
   rv |= CopyFile(FILE_NAME_PERSONALDICTIONARY, FILE_NAME_PERSONALDICTIONARY);
   rv |= CopyFile(FILE_NAME_MAILVIEWS, FILE_NAME_MAILVIEWS);
 
-  return rv | CopyUserContentSheet();
+  // User sheets
+  rv |= CopyUserSheet(FILE_NAME_USERCHROME);
+  return rv | CopyUserSheet(FILE_NAME_USERCONTENT);
 }
 
 nsresult
diff --git a/suite/profile/migration/src/nsThunderbirdProfileMigrator.cpp b/suite/profile/migration/src/nsThunderbirdProfileMigrator.cpp
index 67a08a15a77..7ba1701915f 100644
--- a/suite/profile/migration/src/nsThunderbirdProfileMigrator.cpp
+++ b/suite/profile/migration/src/nsThunderbirdProfileMigrator.cpp
@@ -672,7 +672,7 @@ nsThunderbirdProfileMigrator::CopyPreferences(PRBool aReplace)
   rv |= CopyFile(FILE_NAME_PERSONALDICTIONARY, FILE_NAME_PERSONALDICTIONARY);
   rv |= CopyFile(FILE_NAME_MAILVIEWS, FILE_NAME_MAILVIEWS);
 
-  return rv | CopyUserContentSheet();
+  return rv | CopyUserSheet(FILE_NAME_USERCONTENT);
 }
 
 nsresult