diff --git a/server/FFmpegSource.h b/server/FFmpegSource.h
index 68e3c440..8efb7ced 100644
--- a/server/FFmpegSource.h
+++ b/server/FFmpegSource.h
@@ -20,6 +20,7 @@
 
 namespace FFmpeg {
     extern const std::string kSnap;
+    extern const std::string kBin;
 }
 
 class FFmpegSnap {
diff --git a/server/WebApi.cpp b/server/WebApi.cpp
index fe56d404..04d69246 100755
--- a/server/WebApi.cpp
+++ b/server/WebApi.cpp
@@ -657,6 +657,10 @@ void installWebApi() {
                 continue;
 #endif
             }
+            if (pr.first == FFmpeg::kBin) {
+                WarnL << "Configuration named " << FFmpeg::kBin << " is not allowed to be set by setServerConfig api.";
+                continue;
+            }
             if (ini[pr.first] == pr.second) {
                 continue;
             }