diff --git a/reference/Eigen_demo/eigen_demo.cpp b/reference/Eigen_demo/eigen_demo.cpp
index a40bf3fb2..b9f4c9098 100644
--- a/reference/Eigen_demo/eigen_demo.cpp
+++ b/reference/Eigen_demo/eigen_demo.cpp
@@ -30,7 +30,7 @@ struct SerialTest {
 		
 CONSOLE_APP_MAIN
 {
-	// http://eigen.tuxfamily.org/dox/TutorialMatrixClass.html
+	// https://eigen.tuxfamily.org/dox/group__TutorialMatrixClass.html
 	Cout() << "\n\nTutorial page 1 - The Matrix class";
 	
 	Cout() << "\n\nCoefficient accessors";
@@ -84,7 +84,7 @@ CONSOLE_APP_MAIN
 	Cout() << "\nPress enter to continue\n";
 	ReadStdIn();
 	
-	// http://eigen.tuxfamily.org/dox/TutorialMatrixArithmetic.html
+	// https://eigen.tuxfamily.org/dox-devel/group__TutorialMatrixArithmetic.html
 	Cout() << "\n\nTutorial page 2 - Matrix and vector arithmetic";
 	
 	Cout() << "\n\nAddition and subtraction";
@@ -184,7 +184,7 @@ CONSOLE_APP_MAIN
 	Cout() << "\nPress enter to continue\n";
 	ReadStdIn();
 	
-	// http://eigen.tuxfamily.org/dox/TutorialArrayClass.html
+	// https://eigen.tuxfamily.org/dox/group__TutorialArrayClass.html
 	Cout() << "\n\nTutorial page 3 - The Array class and coefficient-wise operations ";
 	
 	Cout() << "\n\nAccessing values inside an Array";
@@ -269,7 +269,7 @@ CONSOLE_APP_MAIN
 	Cout() << "\nPress enter to continue\n";
 	ReadStdIn();
 	
-	// http://eigen.tuxfamily.org/dox/TutorialBlockOperations.html
+	// https://eigen.tuxfamily.org/dox/group__TutorialBlockOperations.html
 	Cout() << "\n\nTutorial page 4 - Block operations";
 	
 	Cout() << "\n\nUsing block operations";
@@ -333,7 +333,7 @@ CONSOLE_APP_MAIN
 	Cout() << "\nPress enter to continue\n";
 	ReadStdIn();
 	
-	//http://eigen.tuxfamily.org/dox/TutorialAdvancedInitialization.html
+	// https://eigen.tuxfamily.org/dox/group__TutorialAdvancedInitialization.html
 	Cout() << "\n\nTutorial page 5 - Advanced initialization";
 
 	Cout() << "\n\nThe comma initializer";
@@ -426,7 +426,7 @@ CONSOLE_APP_MAIN
 	Cout() << "\nPress enter to continue\n";
 	ReadStdIn();
 	
-	//http://eigen.tuxfamily.org/dox/TutorialLinearAlgebra.html
+	// https://eigen.tuxfamily.org/dox/group__TutorialLinearAlgebra.html
 	Cout() << "\n\nTutorial page 6 - Linear algebra and decompositions";
 
 	Cout() << "\n\nBasic linear solving	Ax = b";
@@ -532,7 +532,7 @@ CONSOLE_APP_MAIN
 	Cout() << "\nPress enter to continue\n";
 	ReadStdIn();
 	
-	// http://eigen.tuxfamily.org/dox/TutorialReductionsVisitorsBroadcasting.html
+	// https://eigen.tuxfamily.org/dox/group__TutorialReductionsVisitorsBroadcasting.html
 	Cout() << "\n\nTutorial page 7 - Reductions, visitors and broadcasting";
 		
 	Cout() << "\n\nReductions";
diff --git a/reference/Eigen_demo/fft.cpp b/reference/Eigen_demo/fft.cpp
index 0f13b15c2..ae7b82e0a 100644
--- a/reference/Eigen_demo/fft.cpp
+++ b/reference/Eigen_demo/fft.cpp
@@ -62,7 +62,7 @@ void FFTTests()
 	        double T = 1/freq;
 	        str << "\n" << freq << csvSep << (freq > 0 ? FormatDouble(T) : "") << csvSep 
 	        			<< 2*std::abs(freqbuf[i])/numData << csvSep 
-	        			<< 2*std::abs(freqbuf2[i])/numData;;
+	        			<< 2*std::abs(freqbuf2[i])/numData;
 	    }
 	    String fftFileName = AppendFileName(GetDesktopFolder(), "fft.csv");
 	    Cout() << "\nFFT saved in '" << fftFileName << "'";