diff --git a/Makefile b/Makefile
index b4323695f60..eb8308387d2 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,8 @@ LIBS = -lSDL -lGL -lGLU -Llua/lib -llua -llualib `sdl-config --libs`
 
 OBJS = main.o lab.o bitmap.o model.o resource.o material.o debug.o \
 	textsplit.o lua.o registry.o localize.o scene.o engine.o actor.o \
-	sound.o mixer.o keyframe.o costume.o walkplane.o textobject.o
+	sound.o mixer.o keyframe.o costume.o walkplane.o textobject.o \
+	matrix3.o matrix4.o
 
 DEPS = $(OBJS:.o=.d)
 
diff --git a/matrix3.cpp b/matrix3.cpp
index 1c750926b81..594b663b4a5 100644
--- a/matrix3.cpp
+++ b/matrix3.cpp
@@ -1,14 +1,14 @@
 #include <math.h>
 #include "matrix3.h"
 
-Matrix3::setAsIdentity( void )
+void Matrix3::setAsIdentity( void )
 {
 	right_.set(1.f, 0.f, 0.f);
 	up_.set(0.f, 1.f, 0.f);
 	at_.set(0.f, 0.f, 0.f);
 }
 
-Matrix3::buildFromPitchYawRoll( float pitch, float yaw, float roll )
+void Matrix3::buildFromPitchYawRoll( float pitch, float yaw, float roll )
 {
     Matrix3 temp1, temp2;
 
@@ -37,7 +37,7 @@ float DegreeToRadian( float degrees )
 }
 
 // right
-Matrix3::constructAroundPitch( float pitch )
+void Matrix3::constructAroundPitch( float pitch )
 {
 	float cosa;
 	float sina;
@@ -51,7 +51,7 @@ Matrix3::constructAroundPitch( float pitch )
 }
 
 // up
-Matrix3::constructAroundYaw( float yaw )
+void Matrix3::constructAroundYaw( float yaw )
 {
 	float cosa;
 	float sina;
@@ -65,7 +65,7 @@ Matrix3::constructAroundYaw( float yaw )
 }
 
 // at
-Matrix3::constructAroundRoll( float roll )
+void Matrix3::constructAroundRoll( float roll )
 {
 	float cosa;
 	float sina;
@@ -175,3 +175,4 @@ void Matrix3::transform( Vector3d v )
 
 	v.set( x, y, z );
 }
+
diff --git a/matrix3.h b/matrix3.h
index 98a29ac10a2..64222420ef8 100644
--- a/matrix3.h
+++ b/matrix3.h
@@ -27,12 +27,12 @@ public:
     Vector3d up_;
     Vector3d at_;
 
-	buildFromPitchYawRoll( float pitch, float yaw, float roll );
-	setAsIdentity(void);
+	void buildFromPitchYawRoll( float pitch, float yaw, float roll );
+	void setAsIdentity(void);
 
-	constructAroundPitch( float pitch );
-	constructAroundYaw( float pitch );
-	constructAroundRoll( float pitch );
+	void constructAroundPitch( float pitch );
+	void constructAroundYaw( float pitch );
+	void constructAroundRoll( float pitch );
 
 	void getPitchYawRoll( float* pPitch, float* pYaw, float* pRoll );
 
@@ -79,4 +79,5 @@ public:
 private:
 };
 
-#endif // MATRIX_HH
\ No newline at end of file
+#endif // MATRIX_HH
+
diff --git a/matrix4.cpp b/matrix4.cpp
index 941f79e69bf..a4c7ffbbac3 100644
--- a/matrix4.cpp
+++ b/matrix4.cpp
@@ -15,4 +15,5 @@ void Matrix4::translate( float x, float y, float z )
 	rot_.transform( v );
 
 	pos_ += v;
-}
\ No newline at end of file
+}
+
diff --git a/matrix4.h b/matrix4.h
index 9d45868f554..68dd05b87cc 100644
--- a/matrix4.h
+++ b/matrix4.h
@@ -56,4 +56,5 @@ public:
 private:
 };
 
-#endif // MATRIX_HH
\ No newline at end of file
+#endif // MATRIX_HH
+