diff --git a/libs/conf/config.c b/libs/conf/config.c
index 15f37d7..ab5d1aa 100644
--- a/libs/conf/config.c
+++ b/libs/conf/config.c
@@ -53,7 +53,7 @@ void conf_init(void) {
     // attempt to read config file to cfg
     if (!config_read_file(&cfg, cfgfile)) {
         // invalid configuration, but let's try to read it anyway
-        fprintf(stdout, "spmenu: Invalid configuration.\n");
+        fprintf(stderr, "spmenu: Invalid configuration.\n");
     }
 
     // load options spmenu.window
diff --git a/libs/theme/theme.c b/libs/theme/theme.c
index f8e03c1..6c8742a 100644
--- a/libs/theme/theme.c
+++ b/libs/theme/theme.c
@@ -49,7 +49,7 @@ void theme_load(void) {
 
     // attempt to read theme
     if (!config_read_file(&cfg, theme)) {
-        fprintf(stdout, "spmenu: Invalid theme.\n"); // invalid configuration, but let's try to read it anyway
+        fprintf(stderr, "spmenu: Invalid theme.\n"); // invalid configuration, but let's try to read it anyway
     }
 
     // load options theme.window