diff --git a/src/BulletSoftBody/CMakeLists.txt b/src/BulletSoftBody/CMakeLists.txt
index ec5fd447e..40155786e 100644
--- a/src/BulletSoftBody/CMakeLists.txt
+++ b/src/BulletSoftBody/CMakeLists.txt
@@ -39,7 +39,7 @@ SET(BulletSoftBody_HDRS
 	btSoftBodySolvers.h
 	btDefaultSoftBodySolver.h
 	
-	btCGrojection.h
+	btCGProjection.h
 	btConjugateGradient.h
 	btDeformableGravityForce.h
 	btDeformableMassSpringForce.h
diff --git a/src/BulletSoftBody/btSoftBodyInternals.h b/src/BulletSoftBody/btSoftBodyInternals.h
index 9c732250b..77bcdc5d8 100644
--- a/src/BulletSoftBody/btSoftBodyInternals.h
+++ b/src/BulletSoftBody/btSoftBodyInternals.h
@@ -28,7 +28,7 @@ subject to the following restrictions:
 #include "BulletDynamics/Featherstone/btMultiBodyLinkCollider.h"
 #include "BulletDynamics/Featherstone/btMultiBodyConstraint.h"
 #include <string.h>  //for memset
-#include <math.h>
+#include <cmath>
 static void findJacobian(const btMultiBodyLinkCollider* multibodyLinkCol,
                          btMultiBodyJacobianData& jacobianData,
                          const btVector3& contact_point,