Fix include in reduced config files
diff --git a/configs/config-psk-rc4-tls1_0.h b/configs/config-psk-rc4-tls1_0.h
index 6a06dc7..99942a6 100644
--- a/configs/config-psk-rc4-tls1_0.h
+++ b/configs/config-psk-rc4-tls1_0.h
@@ -34,6 +34,6 @@
 #define POLARSSL_SSL_SRV_C
 #define POLARSSL_SSL_TLS_C
 
-#include "check_config.h"
+#include "polarssl/check_config.h"
 
 #endif /* POLARSSL_CONFIG_H */