diff --git a/src/Functions/array/arrayRandomSample.cpp b/src/Functions/array/arrayRandomSample.cpp
index 27105d0f744a..1e28e089a2aa 100644
--- a/src/Functions/array/arrayRandomSample.cpp
+++ b/src/Functions/array/arrayRandomSample.cpp
@@ -59,7 +59,7 @@ class FunctionArrayRandomSample : public IFunction
                     "The second argument of function {} is empty or null, type = {}",
                     getName(), arguments[1].type->getName());
 
-        const UInt64 samples = col_samples->getUInt(0);
+        const size_t samples = col_samples->getUInt(0);
 
         pcg64_fast rng(randomSeed());