diff --git a/spec/fixtures/parsers/arithmetic.c b/spec/fixtures/parsers/arithmetic.c
index fd90ebe1..3dead0a5 100644
--- a/spec/fixtures/parsers/arithmetic.c
+++ b/spec/fixtures/parsers/arithmetic.c
@@ -1,5 +1,4 @@
 #include "parser.h"
-#include <ctype.h>
 
 enum ts_symbol {
     ts_symbol_expression,
diff --git a/spec/fixtures/parsers/json.c b/spec/fixtures/parsers/json.c
index 14f6614c..363be6ee 100644
--- a/spec/fixtures/parsers/json.c
+++ b/spec/fixtures/parsers/json.c
@@ -1,5 +1,4 @@
 #include "parser.h"
-#include <ctype.h>
 
 enum ts_symbol {
     ts_symbol_array,
diff --git a/src/compiler/generate_code/c_code.cpp b/src/compiler/generate_code/c_code.cpp
index c6096df8..3e64f96a 100644
--- a/src/compiler/generate_code/c_code.cpp
+++ b/src/compiler/generate_code/c_code.cpp
@@ -246,10 +246,7 @@ namespace tree_sitter {
             }
 
             string includes() {
-                return join({
-                    "#include \"parser.h\"",
-                    "#include <ctype.h>"
-                });
+                return "#include \"parser.h\"";
             }
             
             string lex_function() {