diff --git a/src/Backends/Cubics/GeneralizedCubic.cpp b/src/Backends/Cubics/GeneralizedCubic.cpp
index 16e492b2..0a404b20 100644
--- a/src/Backends/Cubics/GeneralizedCubic.cpp
+++ b/src/Backends/Cubics/GeneralizedCubic.cpp
@@ -1,4 +1,4 @@
-#include "generalizedcubic.h"
+#include "GeneralizedCubic.h"
 #include <cmath>
 
 const double AbstractCubic::T_r = 1.0;
diff --git a/src/Backends/Cubics/GeneralizedCubic.h b/src/Backends/Cubics/GeneralizedCubic.h
index ecec0b82..ac133e40 100644
--- a/src/Backends/Cubics/GeneralizedCubic.h
+++ b/src/Backends/Cubics/GeneralizedCubic.h
@@ -108,12 +108,12 @@ public:
 		         std::vector<double> pc, 
 		         std::vector<double> acentric,
 		         double R_u) 
-		: AbstractCubic(Tc, pc, acentric, R_u, 1+sqrt(2), 1-sqrt(2)) {};
+		: AbstractCubic(Tc, pc, acentric, R_u, 1+sqrt(2.0), 1-sqrt(2.0)) {};
 	PengRobinson(double Tc, 
 		double pc, 
 		double acentric,
 		double R_u) 
-		: AbstractCubic(std::vector<double>(1,Tc), std::vector<double>(1,pc), std::vector<double>(1,acentric), R_u, 1+sqrt(2), 1-sqrt(2)) {};
+		: AbstractCubic(std::vector<double>(1,Tc), std::vector<double>(1,pc), std::vector<double>(1,acentric), R_u, 1+sqrt(2.0), 1-sqrt(2.0)) {};
 
 	double a0_ii(std::size_t i);
 	double b0_ii(std::size_t i);