diff --git a/src/Native/FastTreeNative/ExpandFloatType.cpp b/src/Native/FastTreeNative/ExpandFloatType.cpp
index b476de02d5..a1b817c3ec 100644
--- a/src/Native/FastTreeNative/ExpandFloatType.cpp
+++ b/src/Native/FastTreeNative/ExpandFloatType.cpp
@@ -16,7 +16,8 @@
 #include "SumupOneBit.h"
 
 // Ideally we should expand this using C++ templates. 
-// However, In order to exporting functions from DLL float and double versions need to have different names (cannot be overloaded on type parameters)// Expanding here with ugly pre-processor macros to get double and float versions (with fucntion mes suffixes _float and _double)
+// However, in order to export functions from DLL, float and double versions need to have different names (cannot be overloaded on type parameters)
+// Expanding here with ugly pre-processor macros to get double and float versions (with function name suffixes _float and _double)
 // --andrzejp, 2010-03-05
 
 #define FloatType float
diff --git a/src/Native/FastTreeNative/getderivatives.cpp b/src/Native/FastTreeNative/getderivatives.cpp
index fe6f64b545..b726a0d19f 100644
--- a/src/Native/FastTreeNative/getderivatives.cpp
+++ b/src/Native/FastTreeNative/getderivatives.cpp
@@ -106,7 +106,7 @@ EXPORT_API(void) C_GetDerivatives(
 
             bool sameLabel = labelHigh == pLabels[low];
 
-            // calculate the lambdaP for this pair by looking it up in the lambdaTable (computed in LambdaMart.FillLambdaTable)
+            // calculate the lambdaP for this pair by looking it up in the sigmoidTable (e.g. computed in FastTreeRanking.FillSigmoidTable)
             double lambdaP;
             if (scoreHighMinusLow <= minScore) lambdaP = sigmoidTable[0];
             else if (scoreHighMinusLow >= maxScore) lambdaP = sigmoidTable[sigmoidTableLength - 1];