diff --git a/irc/ArchBlackmann/IRCClient.cpp b/irc/ArchBlackmann/IRCClient.cpp
index dacd5967152..5910358365a 100644
--- a/irc/ArchBlackmann/IRCClient.cpp
+++ b/irc/ArchBlackmann/IRCClient.cpp
@@ -10,7 +10,7 @@
 #include <sstream>
 
 #include "IRCClient.h"
-#include "md5.h"
+#include "MD5.h"
 #include "cram_md5.h"
 #include "trim.h"
 #include "chomp.h"