diff --git a/src/modules/math/math.h b/src/modules/math/math.h
index 2891ca15..20ad0305 100644
--- a/src/modules/math/math.h
+++ b/src/modules/math/math.h
@@ -6,7 +6,6 @@ struct RandomGenerator;
 bool lovrMathInit(void);
 void lovrMathDestroy(void);
 struct RandomGenerator* lovrMathGetRandomGenerator(void);
-void lovrMathOrientationToDirection(float angle, float ax, float ay, float az, float* v);
 float lovrMathGammaToLinear(float x);
 float lovrMathLinearToGamma(float x);
 float lovrMathNoise1(float x);