diff --git a/CMakeLists.txt b/CMakeLists.txt
index 840d6fc..acda12f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ set(SC_3D_CollisionDetectionHelpers_HEADERS "${CMAKE_CURRENT_SOURCE_DIR}/src/sc_
 
 add_library(SC_3D_CollisionDetectionHelpers ${SC_3D_CollisionDetectionHelpers_SOURCES})
 
-set_target_properties(SC_3D_CollisionDetectionHelpers PROPERTIES VERSION 2.0.0 SOVERSION 2)
+set_target_properties(SC_3D_CollisionDetectionHelpers PROPERTIES VERSION 2.0.1 SOVERSION 2)
 
 if(NOT DEFINED CMAKE_BUILD_TYPE OR "${CMAKE_BUILD_TYPE}" STREQUAL "")
     message("Defaulting to \"Debug\" build type.")
diff --git a/Changelog.md b/Changelog.md
index 8309ce9..abf6666 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## Version 2.0.1
+
+Added check in SC_SACD_Sphere_Box_Collision(...) to see if sphere and box has
+same center.
+
 ## Version 2.0.0
 
 Add collision detection with Spheres.
diff --git a/src/sc_sacd.cpp b/src/sc_sacd.cpp
index 2713cdc..7f6a218 100644
--- a/src/sc_sacd.cpp
+++ b/src/sc_sacd.cpp
@@ -296,6 +296,12 @@ int SC_SACD_Sphere_Box_Collision(const SC_SACD_Sphere *sphere,
   SC_SACD_Vec3 sphere_pos{sphere->x, sphere->y, sphere->z};
   SC_SACD_Vec3 sphere_box_normal =
       SC_SACD_Vec3{box->x, box->y, box->z} - sphere_pos;
+  if (sphere_box_normal.x < 0.0001F && sphere_box_normal.x > -0.0001F &&
+      sphere_box_normal.y < 0.0001F && sphere_box_normal.y > -0.0001F &&
+      sphere_box_normal.z < 0.0001F && sphere_box_normal.z > -0.0001F) {
+    // Sphere center is box center.
+    return 1;
+  }
   sphere_box_normal =
       sphere_box_normal /
       std::sqrt(SC_SACD_Dot_Product(sphere_box_normal, sphere_box_normal));