6 files changed, 6 insertions, 0 deletions
diff --git a/src/inttypes/strtoimax.c b/src/inttypes/strtoimax.c
index e473c210..a8dc3fcd 100644
--- a/src/inttypes/strtoimax.c
+++ b/src/inttypes/strtoimax.c
@@ -1,5 +1,6 @@
 #include "stddef.h"
 #include <inttypes.h>
+#include "ctype.h"
 #include "errno.h"
 
 intmax_t strtoimax(const char * restrict nptr, char ** restrict endptr, int base)
diff --git a/src/inttypes/strtoumax.c b/src/inttypes/strtoumax.c
index 60aec599..12d5c18a 100644
--- a/src/inttypes/strtoumax.c
+++ b/src/inttypes/strtoumax.c
@@ -1,5 +1,6 @@
 #include "stddef.h"
 #include <inttypes.h>
+#include "ctype.h"
 #include "errno.h"
 
 uintmax_t strtoumax(const char *restrict nptr, char ** restrict endptr, int base)
diff --git a/src/stdlib/strtol.c b/src/stdlib/strtol.c
index bec5f9d2..28d8f823 100644
--- a/src/stdlib/strtol.c
+++ b/src/stdlib/strtol.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include "ctype.h"
 #include "limits.h"
 #include "errno.h"
 
diff --git a/src/stdlib/strtoll.c b/src/stdlib/strtoll.c
index b0ea0f41..87a338ec 100644
--- a/src/stdlib/strtoll.c
+++ b/src/stdlib/strtoll.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include "ctype.h"
 #include "limits.h"
 #include "errno.h"
 
diff --git a/src/stdlib/strtoul.c b/src/stdlib/strtoul.c
index 414b5897..8ef4eb34 100644
--- a/src/stdlib/strtoul.c
+++ b/src/stdlib/strtoul.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include "ctype.h"
 #include "errno.h"
 #include "limits.h"
 
diff --git a/src/stdlib/strtoull.c b/src/stdlib/strtoull.c
index d655c136..6f9bfe46 100644
--- a/src/stdlib/strtoull.c
+++ b/src/stdlib/strtoull.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include "ctype.h"
 #include "limits.h"
 #include "errno.h"