diff --git a/spot/misc/hash.hh b/spot/misc/hash.hh
index 9e6c9c696..f0f55eea1 100644
--- a/spot/misc/hash.hh
+++ b/spot/misc/hash.hh
@@ -25,7 +25,6 @@
 #include <string>
 #include <functional>
 #include <spot/misc/hashfunc.hh>
-#include <spot/misc/_config.h>
 
 #include <unordered_map>
 #include <unordered_set>