diff --git a/courgette/disassembler_elf_32_x86_unittest.cc b/courgette/disassembler_elf_32_x86_unittest.cc
index 7e84670aefc3b7..a46d6f819b5b23 100644
--- a/courgette/disassembler_elf_32_x86_unittest.cc
+++ b/courgette/disassembler_elf_32_x86_unittest.cc
@@ -4,7 +4,6 @@
 
 #include "courgette/disassembler_elf_32_x86.h"
 
-#include <ctype.h>
 #include <stddef.h>
 #include <stdint.h>