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