--- a/src/unac/unac.h
+++ b/src/unac/unac.h
@@ -110,9 +110,6 @@
 int fold_string(const char* charset,
 		const char* in, size_t in_length,
 		char** out, size_t* out_length);
-
-/* To be called before starting threads in mt programs */
-void unac_init_mt();
 
 #ifdef BUILDING_RECOLL
 #include <string>