diff --git a/src/KeyBind.c b/src/KeyBind.c
index d7c78b37..b0acb195 100644
--- a/src/KeyBind.c
+++ b/src/KeyBind.c
@@ -466,6 +466,8 @@ UCSConvertCase( register unsigned code,
             *upper = 0x0178;
         else if (code == 0x00b5)      /* micro sign */
             *upper = 0x039c;
+        else if (code == 0x00df)      /* ssharp */
+            *upper = 0x1e9e;
 	return;
     }
 
@@ -595,6 +597,8 @@ UCSConvertCase( register unsigned code,
         }
         else if (code == 0x1e9b)
             *upper = 0x1e60;
+        else if (code == 0x1e9e)
+            *lower = 0x00df;    /* ssharp */
     }
 
     /* Greek Extended, U+1F00 to U+1FFF */