diff --git a/system/jlib/jstring.cpp b/system/jlib/jstring.cpp
index a99f695da10..047fa80ebc6 100644
--- a/system/jlib/jstring.cpp
+++ b/system/jlib/jstring.cpp
@@ -1071,17 +1071,10 @@ StringBuffer & StringBuffer::replaceString(const char* oldStr, const char* newSt
         {
             if (memcmp(buffer, oldStr, oldlen) == 0)
             {
-                if (newlen <= curLen)
-                {
-                    memmove(buffer, newStr, newlen);
-                    curLen = newlen;
-                }
-                else
-                {
+                if (newlen > curLen)
                     ensureCapacity(newlen);
-                    memcpy(buffer, newStr, newlen);
-                    curLen = newlen;
-                }
+                memcpy(buffer, newStr, newlen);
+                curLen = newlen;
             }
         }
         else