diff --git a/src/fd.c b/src/fd.c
index f77fc4f..9108f52 100644
--- a/src/fd.c
+++ b/src/fd.c
@@ -30,8 +30,9 @@
 #include "libzzuf.h"
 #include "fd.h"
 
-regex_t * re_include = NULL;
-regex_t * re_exclude = NULL;
+/* Regex stuff */
+static regex_t * re_include = NULL;
+static regex_t * re_exclude = NULL;
 
 /* File descriptor stuff */
 static struct files
@@ -46,6 +47,28 @@ static struct files
 static int *fds;
 static int maxfd, nfiles;
 
+void _zz_include(char const *regex)
+{
+    re_include = malloc(sizeof(*re_include));
+
+    if(regcomp(re_include, regex, REG_EXTENDED) != 0)
+    {
+        free(re_include);
+        re_include = NULL;
+    }
+}
+
+void _zz_exclude(char const *regex)
+{
+    re_exclude = malloc(sizeof(*re_exclude));
+
+    if(regcomp(re_exclude, regex, REG_EXTENDED) != 0)
+    {
+        free(re_exclude);
+        re_exclude = NULL;
+    }
+}
+
 void _zz_fd_init(void)
 {
     files = NULL;
diff --git a/src/fd.h b/src/fd.h
index 9cf5c9c..a079ee9 100644
--- a/src/fd.h
+++ b/src/fd.h
@@ -16,12 +16,11 @@
  *  fd.h: file descriptor functions
  */
 
+extern void _zz_include(char const *);
+extern void _zz_exclude(char const *);
 extern void _zz_fd_init(void);
 extern void _zz_fd_fini(void);
 
-extern regex_t * re_include;
-extern regex_t * re_exclude;
-
 extern int _zz_mustwatch(char const *);
 extern int _zz_iswatched(int);
 extern void _zz_register(int);
diff --git a/src/fuzz.c b/src/fuzz.c
index 7cd01cf..6b305fb 100644
--- a/src/fuzz.c
+++ b/src/fuzz.c
@@ -25,7 +25,6 @@
 #endif
 #include <stdio.h>
 #include <string.h>
-#include <regex.h>
 
 #include "libzzuf.h"
 #include "debug.h"
diff --git a/src/libzzuf.c b/src/libzzuf.c
index f839953..3c9d370 100644
--- a/src/libzzuf.c
+++ b/src/libzzuf.c
@@ -29,7 +29,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <fcntl.h>
-#include <regex.h>
 
 #include <stdarg.h>
 #include <dlfcn.h>
@@ -74,17 +73,11 @@ void _zz_init(void)
 
     tmp = getenv("ZZUF_INCLUDE");
     if(tmp && *tmp)
-    {
-        re_include = malloc(sizeof(*re_include));
-        regcomp(re_include, tmp, REG_EXTENDED);
-    }
+        _zz_include(tmp);
 
     tmp = getenv("ZZUF_EXCLUDE");
     if(tmp && *tmp)
-    {
-        re_exclude = malloc(sizeof(*re_exclude));
-        regcomp(re_exclude, tmp, REG_EXTENDED);
-    }
+        _zz_exclude(tmp);
 
     tmp = getenv("ZZUF_SIGNAL");
     if(tmp && *tmp == '1')
diff --git a/src/load-fd.c b/src/load-fd.c
index 47837de..0deabd9 100644
--- a/src/load-fd.c
+++ b/src/load-fd.c
@@ -31,7 +31,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <dlfcn.h>
-#include <regex.h>
 
 #include <sys/types.h>
 #include <sys/socket.h>
diff --git a/src/load-signal.c b/src/load-signal.c
index bed2037..1eeb3b6 100644
--- a/src/load-signal.c
+++ b/src/load-signal.c
@@ -28,7 +28,6 @@
 #endif
 #include <stdlib.h>
 #include <dlfcn.h>
-#include <regex.h>
 
 #include <string.h>
 #include <signal.h>
diff --git a/src/load-stream.c b/src/load-stream.c
index 5fe2785..3fca4a8 100644
--- a/src/load-stream.c
+++ b/src/load-stream.c
@@ -27,7 +27,6 @@
 #endif
 #include <stdlib.h>
 #include <dlfcn.h>
-#include <regex.h>
 
 #include <stdio.h>
 #include <sys/types.h>