diff --git a/docs/ManualTests.md b/docs/ManualTests.md
index deb8111a..6fbc6716 100644
--- a/docs/ManualTests.md
+++ b/docs/ManualTests.md
@@ -11,7 +11,7 @@ These manual tests are run before every release of the Calculator app.
 Steps:
 1. From the Standard Calculator page, input “3”, “+”, “3”, “Enter” on the keyboard 
 Expected: “6” shows up in the display 
-2. Input “4”, “-“, “2”, “=” using the in-app buttons 
+2. Input “4”, “-”, “2”, “=” using the in-app buttons 
 *Expected: “2” shows up in the display*
  
  **Test 2**
@@ -31,7 +31,7 @@ Steps:
 
 **Test 2**
 Steps:
-1. Input “5”, “n!“, “=” using the in-app buttons 
+1. Input “5”, “n!”, “=” using the in-app buttons 
 *Expected: “120” shows up in the display*
 
 ### Math in Programmer Calculator 
diff --git a/src/CalcManager/Ratpack/exp.cpp b/src/CalcManager/Ratpack/exp.cpp
index ec87204a..97d02c6b 100644
--- a/src/CalcManager/Ratpack/exp.cpp
+++ b/src/CalcManager/Ratpack/exp.cpp
@@ -235,7 +235,7 @@ void log10rat( PRAT *px, int32_t precision)
 }
 
 //
-// return if the given x is even number. The assumption here is its numerator is 1 and we are testing the numerator is 
+// return if the given x is even number. The assumption here is its denominator is 1 and we are testing the numerator is 
 // even or not
 bool IsEven(PRAT x, uint32_t radix, int32_t precision)
 {