diff --git a/guacd/configure.in b/guacd/configure.in
index 18c25cf8..36a30c52 100644
--- a/guacd/configure.in
+++ b/guacd/configure.in
@@ -17,7 +17,7 @@ AC_CHECK_HEADERS([netinet/in.h stdlib.h string.h sys/socket.h syslog.h unistd.h
 
 # Checks for library functions.
 AC_FUNC_MALLOC
-AC_CHECK_FUNCS([memset socket strerror])
+AC_CHECK_FUNCS([memset socket strerror fork])
 
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT
diff --git a/guacd/src/daemon.c b/guacd/src/daemon.c
index c7340619..c99e3453 100644
--- a/guacd/src/daemon.c
+++ b/guacd/src/daemon.c
@@ -173,7 +173,7 @@ int main(int argc, char* argv[]) {
     } 
 
     /* Fork into background */
-#ifdef fork
+#ifdef HAVE_FORK
     daemon_pid = fork();
 
     /* If error, fail */