diff --git a/ci/cilib.cpp b/ci/cilib.cpp
index de85be272..8520849c0 100755
--- a/ci/cilib.cpp
+++ b/ci/cilib.cpp
@@ -384,7 +384,7 @@ void TImage_window::update()
   _curr_month = month;
 	clear(MASK_BACK_COLOR);
 
-	TFilename month_img; month_img.format("calend%02d.jpg", _curr_month);
+	TFilename month_img; month_img.format("%2smn%02d.jpg", (const char *) f.mask().source_file().left(2), _curr_month);
 
 	if (month_img.custom_path())
   {                     
diff --git a/ci/calend01.jpg b/ci/cimn01.jpg
similarity index 100%
rename from ci/calend01.jpg
rename to ci/cimn01.jpg
diff --git a/ci/calend02.jpg b/ci/cimn02.jpg
similarity index 100%
rename from ci/calend02.jpg
rename to ci/cimn02.jpg
diff --git a/ci/calend03.jpg b/ci/cimn03.jpg
similarity index 100%
rename from ci/calend03.jpg
rename to ci/cimn03.jpg
diff --git a/ci/calend04.jpg b/ci/cimn04.jpg
similarity index 100%
rename from ci/calend04.jpg
rename to ci/cimn04.jpg
diff --git a/ci/calend05.jpg b/ci/cimn05.jpg
similarity index 100%
rename from ci/calend05.jpg
rename to ci/cimn05.jpg
diff --git a/ci/calend06.jpg b/ci/cimn06.jpg
similarity index 100%
rename from ci/calend06.jpg
rename to ci/cimn06.jpg
diff --git a/ci/calend07.jpg b/ci/cimn07.jpg
similarity index 100%
rename from ci/calend07.jpg
rename to ci/cimn07.jpg
diff --git a/ci/calend08.jpg b/ci/cimn08.jpg
similarity index 100%
rename from ci/calend08.jpg
rename to ci/cimn08.jpg
diff --git a/ci/calend09.jpg b/ci/cimn09.jpg
similarity index 100%
rename from ci/calend09.jpg
rename to ci/cimn09.jpg
diff --git a/ci/calend10.jpg b/ci/cimn10.jpg
similarity index 100%
rename from ci/calend10.jpg
rename to ci/cimn10.jpg
diff --git a/ci/calend11.jpg b/ci/cimn11.jpg
similarity index 100%
rename from ci/calend11.jpg
rename to ci/cimn11.jpg
diff --git a/ci/calend12.jpg b/ci/cimn12.jpg
similarity index 100%
rename from ci/calend12.jpg
rename to ci/cimn12.jpg