diff --git a/src/libslic3r/AppConfig.cpp b/src/libslic3r/AppConfig.cpp
index 59e236db38..9f174740dc 100644
--- a/src/libslic3r/AppConfig.cpp
+++ b/src/libslic3r/AppConfig.cpp
@@ -837,6 +837,10 @@ void AppConfig::save()
 #endif
 
     c.close();
+    if (c.fail()) {
+      BOOST_LOG_TRIVIAL(error) << "Failed to write new configuration to " << path_pid << "; aborting attempt to overwrite original configuration";
+      return;
+    }
 
 #ifdef WIN32
     // Make a backup of the configuration file before copying it to the final destination.
@@ -1042,6 +1046,10 @@ void AppConfig::save()
     c << appconfig_md5_hash_line(config_str);
 #endif
     c.close();
+    if (c.fail()) {
+      BOOST_LOG_TRIVIAL(error) << "Failed to write new configuration to " << path_pid << "; aborting attempt to overwrite original configuration";
+      return;
+    }
 
 #ifdef WIN32
     // Make a backup of the configuration file before copying it to the final destination.