diff --git a/src/filters/filter.h b/src/filters/filter.h
index ccb7af4..6c619e7 100644
--- a/src/filters/filter.h
+++ b/src/filters/filter.h
@@ -4,7 +4,14 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#if defined(__linux__)
+#include <alloca.h>
+#endif
+#include <assert.h>
 #include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 #define ID_MAX 32
 #define PATTERN_MAX 256
diff --git a/src/filters/pcre.c b/src/filters/pcre.c
index 9ed4ca6..b7b371c 100644
--- a/src/filters/pcre.c
+++ b/src/filters/pcre.c
@@ -4,12 +4,6 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-#include <alloca.h>
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
 #include "filter.h"
 
 #include <pcre.h>
diff --git a/src/filters/preg.c b/src/filters/preg.c
index 3ab2f14..3790fc0 100644
--- a/src/filters/preg.c
+++ b/src/filters/preg.c
@@ -4,12 +4,6 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-#include <alloca.h>
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
 #include "filter.h"
 
 #include <regex.h>