diff --git a/velox/functions/prestosql/Probability.h b/velox/functions/prestosql/Probability.h
index 01df8923cf720..3d2d981fa13ef 100644
--- a/velox/functions/prestosql/Probability.h
+++ b/velox/functions/prestosql/Probability.h
@@ -111,7 +111,6 @@ struct InverseBinomialCDFFunction {
 
     boost::math::binomial_distribution<> dist(numOfTrials, successProb);
     result = boost::math::quantile(dist, p);
-    result = numOfTrials;
   }
 };
 
diff --git a/velox/functions/prestosql/tests/ProbabilityTest.cpp b/velox/functions/prestosql/tests/ProbabilityTest.cpp
index aae94cba2d964..67ae99398952c 100644
--- a/velox/functions/prestosql/tests/ProbabilityTest.cpp
+++ b/velox/functions/prestosql/tests/ProbabilityTest.cpp
@@ -166,23 +166,19 @@ TEST_F(ProbabilityTest, inverseBinomialCDF) {
         p);
   };
 
-  //EXPECT_EQ(0, invBinomialCDF(5, 0.5, 0.03125));
-  EXPECT_EQ(5, invBinomialCDF(5, 0.5, 0.03125));
+  EXPECT_EQ(0, invBinomialCDF(5, 0.5, 0.03125));
   EXPECT_EQ(41, invBinomialCDF(41, 0.2, 1.0));
-  //EXPECT_EQ(3, invBinomialCDF(5, 0.5, 0.8125));
-  EXPECT_EQ(5, invBinomialCDF(5, 0.5, 0.8125));
+  EXPECT_EQ(3, invBinomialCDF(5, 0.5, 0.8125));
   EXPECT_EQ(3, invBinomialCDF(3, 0.8403, 0.5));
-  //EXPECT_EQ(62, invBinomialCDF(200, 0.3, 0.6));
-  EXPECT_EQ(200, invBinomialCDF(200, 0.3, 0.6));
-  //EXPECT_EQ(0, invBinomialCDF(79, 0.6, 0.0));
-  EXPECT_EQ(79, invBinomialCDF(79, 0.6, 0.0));
+  EXPECT_EQ(62, invBinomialCDF(200, 0.3, 0.6));
+  EXPECT_EQ(0, invBinomialCDF(79, 0.6, 0.0));
   EXPECT_EQ(std::nullopt, invBinomialCDF(std::nullopt, 0.6, 0.0));
   EXPECT_EQ(std::nullopt, invBinomialCDF(11, std::nullopt, 0.22));
   EXPECT_EQ(std::nullopt, invBinomialCDF(134, 0.6, std::nullopt));
   EXPECT_EQ(
       std::nullopt, invBinomialCDF(std::nullopt, std::nullopt, std::nullopt));
 
-  //Test invalid inputs for numberOfTrials.
+  // Test invalid inputs for numberOfTrials.
   VELOX_ASSERT_THROW(
       invBinomialCDF(0, 0.5, 0.3), "numberOfTrials must be greater than 0");
   VELOX_ASSERT_THROW(