diff --git a/src/quaternion.cpp b/src/quaternion.cpp
index ba2a17b..7eaf578 100644
--- a/src/quaternion.cpp
+++ b/src/quaternion.cpp
@@ -136,7 +136,7 @@ float &Quaternion::operator [](unsigned i) {
 }
 
 Vector3 Quaternion::eulerXYZ() const {
-    double a2 = 2 * (c[0] * c[2] - c[1] * c[3]);
+    float a2 = 2 * (c[0] * c[2] - c[1] * c[3]);
     if(a2 <= -0.99999) {
         return Vector3::Create(
            2.0f * atan2(c[1], c[0]),
@@ -151,9 +151,9 @@ Vector3 Quaternion::eulerXYZ() const {
         );
     } else {
         return Vector3::Create(
-             atan2(2 * (c[0] * c[1] + c[2] * c[3]), (1 - 2 * (c[1] * c[1] + c[2] * c[2]))),
+             atan2f(2 * (c[0] * c[1] + c[2] * c[3]), (1 - 2 * (c[1] * c[1] + c[2] * c[2]))),
              asinf(a2),
-             atan2(2 * (c[0] * c[3] + c[1] * c[2]), (1 - 2 * (c[2] * c[2] + c[3] * c[3])))
+             atan2f(2 * (c[0] * c[3] + c[1] * c[2]), (1 - 2 * (c[2] * c[2] + c[3] * c[3])))
          );
     }
     
diff --git a/src/scalar.cpp b/src/scalar.cpp
index 3fee6d1..ea0784f 100644
--- a/src/scalar.cpp
+++ b/src/scalar.cpp
@@ -35,7 +35,7 @@ namespace kraken {
 
 float SmoothStep(float a, float b, float t)
 {
-    float d = (3.0 * t * t - 2.0 * t * t * t);
+    float d = (3.0f * t * t - 2.0f * t * t * t);
     return a * (1.0f - d) + b * d;
 }
 
diff --git a/src/triangle3.cpp b/src/triangle3.cpp
index 59f6738..78093ce 100644
--- a/src/triangle3.cpp
+++ b/src/triangle3.cpp
@@ -150,7 +150,7 @@ Vector3 Triangle3::operator[](unsigned int i) const
 bool Triangle3::rayCast(const Vector3 &start, const Vector3 &dir, Vector3 &hit_point) const
 {
     // algorithm based on Dan Sunday's implementation at http://geomalgorithms.com/a06-_intersect-2.html
-    const float SMALL_NUM = 0.00000001;     // anything that avoids division overflow
+    const float SMALL_NUM = 0.00000001f;     // anything that avoids division overflow
     Vector3   u, v, n;                    // triangle vectors
     Vector3   w0, w;                      // ray vectors
     float       r, a, b;                    // params to calc ray-plane intersect