diff --git a/dlls/usp10/bidi.c b/dlls/usp10/bidi.c
index 2926454879f..5b227d81f6b 100644
--- a/dlls/usp10/bidi.c
+++ b/dlls/usp10/bidi.c
@@ -513,11 +513,16 @@ static inline int iso_previousChar(IsolatedRun *iso_run, int index)
 
 static inline void iso_dump_types(const char* header, IsolatedRun *iso_run)
 {
-    int i;
+    int i, len = 0;
     TRACE("%s:",header);
     TRACE("[ ");
-    for (i = 0; i < iso_run->length; i++)
+    for (i = 0; i < iso_run->length && len < 200; i++)
+    {
         TRACE(" %s",debug_type[*iso_run->item[i].pcls]);
+        len += strlen(debug_type[*iso_run->item[i].pcls])+1;
+    }
+    if (i != iso_run->length)
+        TRACE("...");
     TRACE(" ]\n");
 }