diff --git a/kernel/yosys.cc b/kernel/yosys.cc
index ceb1d1d39..a12355f1d 100644
--- a/kernel/yosys.cc
+++ b/kernel/yosys.cc
@@ -63,7 +63,7 @@
     extern "C" PyObject* INIT_MODULE();
 #else
 #   define INIT_MODULE initlibyosys
-	    extern "C" void INIT_MODULE();
+	extern "C" void INIT_MODULE();
 #endif
 #endif