diff --git a/Makefile b/Makefile
index 8246b78f..d2e89979 100644
--- a/Makefile
+++ b/Makefile
@@ -35,7 +35,7 @@ AOBJS = $(LIBC_OBJS)
 LOBJS = $(LIBC_OBJS:.o=.lo)
 GENH = obj/include/bits/alltypes.h obj/include/bits/syscall.h
 GENH_INT = obj/src/internal/version.h
-IMPH = $(addprefix $(srcdir)/, src/internal/stdio_impl.h src/internal/pthread_impl.h src/internal/libc.h)
+IMPH = $(addprefix $(srcdir)/, src/internal/stdio_impl.h src/internal/pthread_impl.h src/internal/locale_impl.h src/internal/libc.h)
 
 LDFLAGS =
 LDFLAGS_AUTO =
diff --git a/src/internal/locale_impl.h b/src/internal/locale_impl.h
index f5e4d9b4..d5a3cc94 100644
--- a/src/internal/locale_impl.h
+++ b/src/internal/locale_impl.h
@@ -6,7 +6,7 @@
 #include "libc.h"
 #include "pthread_impl.h"
 
-#define LOCALE_NAME_MAX 15
+#define LOCALE_NAME_MAX 23
 
 struct __locale_map {
 	const void *map;