diff --git a/ChangeLog b/ChangeLog
index 109aaa601..535a46ca6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -11,6 +11,7 @@
     which may be spelling mistakes or deprecated variables.
   + "configure --enable-debug" now supported to suppress compiler optimization
     to allow debugging.
+  + Allow lower case priorities, and automatically upper case them.
 
 ------ old releases ------------------------------
 
diff --git a/src/text.cpp b/src/text.cpp
index 46ae3bbe4..b459e2856 100644
--- a/src/text.cpp
+++ b/src/text.cpp
@@ -296,7 +296,7 @@ std::string upperCase (const std::string& input)
 {
   std::string output = input;
   for (int i = 0; i < (int) input.length (); ++i)
-    if (::isupper (input[i]))
+    if (::islower (input[i]))
       output[i] = ::toupper (input[i]);
 
   return output;