diff --git a/src/regex_yaml.h b/src/regex_yaml.h
index 2491c16..8f28b85 100644
--- a/src/regex_yaml.h
+++ b/src/regex_yaml.h
@@ -10,7 +10,7 @@
 #include <string>
 #include <vector>
 
-#include "yaml-cpp\dll.h"
+#include "yaml-cpp/dll.h"
 
 namespace YAML {
 class Stream;