diff --git a/extern/oics/ICSInputControlSystem.cpp b/extern/oics/ICSInputControlSystem.cpp
index a8aedfd2e5..8bb9c46381 100644
--- a/extern/oics/ICSInputControlSystem.cpp
+++ b/extern/oics/ICSInputControlSystem.cpp
@@ -28,6 +28,8 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 namespace ICS
 {
+	const float ICS_MAX = std::numeric_limits<float>::max();
+
 	InputControlSystem::InputControlSystem(std::string file, bool active
 		, DetectingBindingListener* detectingBindingListener
 		, InputControlSystemLog* log, size_t channelCount)
diff --git a/extern/oics/ICSInputControlSystem.h b/extern/oics/ICSInputControlSystem.h
index a82a11d751..691a937255 100644
--- a/extern/oics/ICSInputControlSystem.h
+++ b/extern/oics/ICSInputControlSystem.h
@@ -236,7 +236,7 @@ namespace ICS
 
 	};
 
-	static const float ICS_MAX = std::numeric_limits<float>::max();
+	extern const float ICS_MAX;
 }