diff --git a/dbms/src/Functions/FunctionsMath.cpp b/dbms/src/Functions/FunctionsMath.cpp
index 49036dbe247..eb549e425a2 100644
--- a/dbms/src/Functions/FunctionsMath.cpp
+++ b/dbms/src/Functions/FunctionsMath.cpp
@@ -11,26 +11,28 @@ const double PiImpl::value = 3.1415926535897932384626433832795028841971693;
 void registerFunctionsMath(FunctionFactory & factory)
 {
     factory.registerFunction<FunctionE>();
-    factory.registerFunction<FunctionPi>();
-    factory.registerFunction<FunctionExp>();
-    factory.registerFunction<FunctionLog>();
+    factory.registerFunction<FunctionPi>(FunctionFactory::CaseInsensitive);
+    factory.registerFunction<FunctionExp>(FunctionFactory::CaseInsensitive);
+    factory.registerFunction<FunctionLog>(FunctionFactory::CaseInsensitive);
     factory.registerFunction<FunctionExp2>();
-    factory.registerFunction<FunctionLog2>();
+    factory.registerFunction<FunctionLog2>(FunctionFactory::CaseInsensitive);
     factory.registerFunction<FunctionExp10>();
-    factory.registerFunction<FunctionLog10>();
-    factory.registerFunction<FunctionSqrt>();
+    factory.registerFunction<FunctionLog10>(FunctionFactory::CaseInsensitive);
+    factory.registerFunction<FunctionSqrt>(FunctionFactory::CaseInsensitive);
     factory.registerFunction<FunctionCbrt>();
     factory.registerFunction<FunctionErf>();
     factory.registerFunction<FunctionErfc>();
     factory.registerFunction<FunctionLGamma>();
     factory.registerFunction<FunctionTGamma>();
-    factory.registerFunction<FunctionSin>();
-    factory.registerFunction<FunctionCos>();
-    factory.registerFunction<FunctionTan>();
-    factory.registerFunction<FunctionAsin>();
-    factory.registerFunction<FunctionAcos>();
-    factory.registerFunction<FunctionAtan>();
-    factory.registerFunction<FunctionPow>();
+    factory.registerFunction<FunctionSin>(FunctionFactory::CaseInsensitive);
+    factory.registerFunction<FunctionCos>(FunctionFactory::CaseInsensitive);
+    factory.registerFunction<FunctionTan>(FunctionFactory::CaseInsensitive);
+    factory.registerFunction<FunctionAsin>(FunctionFactory::CaseInsensitive);
+    factory.registerFunction<FunctionAcos>(FunctionFactory::CaseInsensitive);
+    factory.registerFunction<FunctionAtan>(FunctionFactory::CaseInsensitive);
+    factory.registerFunction<FunctionPow>(FunctionFactory::CaseInsensitive);
+
+    factory.registerAlias("power", "pow", FunctionFactory::CaseInsensitive);
 }
 
 }
diff --git a/dbms/tests/queries/0_stateless/00756_power_alias.reference b/dbms/tests/queries/0_stateless/00756_power_alias.reference
new file mode 100644
index 00000000000..dcc7e7cf0a2
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/00756_power_alias.reference
@@ -0,0 +1 @@
+9	9	9	9
diff --git a/dbms/tests/queries/0_stateless/00756_power_alias.sql b/dbms/tests/queries/0_stateless/00756_power_alias.sql
new file mode 100644
index 00000000000..e8f543ffb3a
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/00756_power_alias.sql
@@ -0,0 +1 @@
+SELECT pow(3, 2), POW(3, 2), power(3, 2), POWER(3, 2);