diff --git a/dbms/src/Core/Settings.cpp b/dbms/src/Core/Settings.cpp
index ede3a660cb379963e8f146d192f25c49b2d0249e..fe6e0c18b85cffc1083d1ebe5726fce8493eb076 100644
--- a/dbms/src/Core/Settings.cpp
+++ b/dbms/src/Core/Settings.cpp
@@ -37,7 +37,7 @@ void Settings::setProfile(const String & profile_name, const Poco::Util::Abstrac
     {
         if (key == "constraints")
             continue;
-        if (key == "profile" || key.find("profile[") == 0)   /// Inheritance of profiles from the current one.
+        if (key == "profile" || 0 == key.compare(0, strlen("profile["), "profile["))   /// Inheritance of profiles from the current one.
             setProfile(config.getString(elem + "." + key), config);
         else
             set(key, config.getString(elem + "." + key));