diff --git a/src/rmodels.c b/src/rmodels.c
index bfdebe3b8..fea1d4589 100644
--- a/src/rmodels.c
+++ b/src/rmodels.c
@@ -778,6 +778,10 @@ void DrawCylinderEx(Vector3 startPos, Vector3 endPos, float startRadius, float e
     if(sides < 3) sides = 3;
 
     Vector3 direction = { endPos.x - startPos.x, endPos.y - startPos.y, endPos.z - startPos.z };
+    if(direction.x == direction.x && direction.y == direction.y && direction.z == direction.z) {
+        return;
+    }
+
     // Construct a basis of the base and the top face:
     Vector3 b1 = Vector3Normalize(Vector3Perpendicular(direction));
     Vector3 b2 = Vector3Normalize(Vector3CrossProduct(b1, direction));
@@ -868,10 +872,14 @@ void DrawCylinderWiresEx(Vector3 startPos, Vector3 endPos, float startRadius, fl
     int numVertex = sides*6;
     rlCheckRenderBatchLimit(numVertex);
 
-    Vector3 difference = Vector3Subtract(endPos, startPos);
+    Vector3 direction = { endPos.x - startPos.x, endPos.y - startPos.y, endPos.z - startPos.z };
+    if(direction.x == direction.x && direction.y == direction.y && direction.z == direction.z) {
+        return;
+    }
+
     // Construct a basis of the base and the top face:
-    Vector3 b1 = Vector3Normalize(Vector3Perpendicular(difference));
-    Vector3 b2 = Vector3Normalize(Vector3CrossProduct(b1, difference));
+    Vector3 b1 = Vector3Normalize(Vector3Perpendicular(direction));
+    Vector3 b2 = Vector3Normalize(Vector3CrossProduct(b1, direction));
 
     float baseAngle = (2.0*PI)/sides;