diff --git a/src/mod_cml_funcs.h b/src/mod_cml_funcs.h
index fafe70d0..42e067ce 100644
--- a/src/mod_cml_funcs.h
+++ b/src/mod_cml_funcs.h
@@ -1,7 +1,9 @@
 #ifndef _MOD_CML_FUNCS_H_
 #define _MOD_CML_FUNCS_H_
 
+#ifdef HAVE_CONFIG_H
 #include "config.h"
+#endif
 
 #ifdef HAVE_LUA_H
 #include <lua.h>
diff --git a/src/mod_skeleton.c b/src/mod_skeleton.c
index 2701eb4b..a3fa186f 100644
--- a/src/mod_skeleton.c
+++ b/src/mod_skeleton.c
@@ -8,7 +8,9 @@
 
 #include "plugin.h"
 
+#ifdef HAVE_CONFIG_H
 #include "config.h"
+#endif
 
 /**
  * this is a skeleton for a lighttpd plugin
diff --git a/src/mod_ssi_exprparser.y b/src/mod_ssi_exprparser.y
index 1bf229b7..c1239410 100644
--- a/src/mod_ssi_exprparser.y
+++ b/src/mod_ssi_exprparser.y
@@ -6,7 +6,9 @@
 %include {
 #include <assert.h>
 #include <string.h>
+#ifdef HAVE_CONFIG_H
 #include "config.h"
+#endif
 #include "mod_ssi_expr.h"
 #include "buffer.h"
 }
diff --git a/src/spawn-fcgi.c b/src/spawn-fcgi.c
index 91ede94b..52909371 100644
--- a/src/spawn-fcgi.c
+++ b/src/spawn-fcgi.c
@@ -9,7 +9,9 @@
 #include <unistd.h>
 #include <fcntl.h>
 
+#ifdef HAVE_CONFIG_H
 #include "config.h"
+#endif
 
 
 #ifdef HAVE_PWD_H