diff --git a/aarch64.c b/aarch64.c
index 904f688f..b3ffcc49 100644
--- a/aarch64.c
+++ b/aarch64.c
@@ -6,9 +6,7 @@
 #include <stdlib.h>
 #include <stdint.h>
 #include <unistd.h>
-#ifdef LIBCO_MPROTECT
-  #include <sys/mman.h>
-#endif
+#include <sys/mman.h>
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/amd64.c b/amd64.c
index 45f3f6d8..e9424c0b 100644
--- a/amd64.c
+++ b/amd64.c
@@ -99,9 +99,7 @@ static void (*co_swap)(cothread_t, cothread_t) = 0;
   };
 
   #include <unistd.h>
-  #ifdef LIBCO_MPROTECT
-    #include <sys/mman.h>
-  #endif
+  #include <sys/mman.h>
 
   static void co_init() {
     #ifdef LIBCO_MPROTECT
diff --git a/arm.c b/arm.c
index 0ebf2e7a..95adf6b2 100644
--- a/arm.c
+++ b/arm.c
@@ -5,9 +5,7 @@
 #include <assert.h>
 #include <stdlib.h>
 #include <unistd.h>
-#ifdef LIBCO_MPROTECT
-  #include <sys/mman.h>
-#endif
+#include <sys/mman.h>
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/x86.c b/x86.c
index 8b339ee7..fa1c538f 100644
--- a/x86.c
+++ b/x86.c
@@ -53,9 +53,7 @@ static const unsigned char co_swap_function[4096] = {
   }
 #else
   #include <unistd.h>
-  #ifdef LIBCO_MPROTECT
-    #include <sys/mman.h>
-  #endif
+  #include <sys/mman.h>
 
   static void co_init() {
     #ifdef LIBCO_MPROTECT