diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 250ab1a..71c4e77 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -21,3 +21,21 @@ jobs:
     - name: Build
       run: go build ./...
       working-directory: raylib
+    - name: Verify dependencies
+      run: go mod verify
+      working-directory: raylib
+    - name: Build
+      run: go build -v ./...
+      working-directory: raylib
+    - name: Run go vet
+      run: go vet ./...
+      working-directory: raylib
+    - name: Install staticcheck
+      run: go install honnef.co/go/tools/cmd/staticcheck@latest
+      working-directory: raylib
+    - name: Run staticcheck
+      run: staticcheck ./...
+      working-directory: raylib
+    - name: Run tests
+      run: go test -race -vet=off ./...
+      working-directory: raylib
diff --git a/Makefile b/Makefile
deleted file mode 100644
index 0e4a951..0000000
--- a/Makefile
+++ /dev/null
@@ -1,11 +0,0 @@
-PACKAGES= raylib raygui easings physics rres
-
-GO?= go
-
-all: packages
-
-packages:
-	@for pkg in ${PACKAGES}; do \
-		echo "Building package github.com/gen2brain/raylib-go/$$pkg..."; \
-		${GO} build github.com/gen2brain/raylib-go/$$pkg || exit 1; \
-	done
diff --git a/raylib/platform_desktop.go b/raylib/platform_desktop.go
index 8b4e146..c01b84f 100644
--- a/raylib/platform_desktop.go
+++ b/raylib/platform_desktop.go
@@ -27,7 +27,6 @@ func InitWindow(width int32, height int32, title string) {
 
 // SetCallbackFunc - Sets callback function
 func SetCallbackFunc(func()) {
-	return
 }
 
 // ShowCursor - Shows cursor
@@ -87,7 +86,6 @@ func LoadDroppedFiles() []string {
 
 // UnloadDroppedFiles - Unload dropped filepaths
 func UnloadDroppedFiles() {
-	return
 }
 
 // OpenAsset - Open asset
diff --git a/raylib/raylib.go b/raylib/raylib.go
index a87909e..31e383f 100644
--- a/raylib/raylib.go
+++ b/raylib/raylib.go
@@ -848,7 +848,7 @@ type MaterialMap struct {
 	Value float32
 }
 
-// Model, meshes, materials and animation data
+// Model is struct of model, meshes, materials and animation data
 type Model struct {
 	// Local transform matrix
 	Transform     Matrix
@@ -1195,6 +1195,7 @@ func newRenderTexture2DFromPointer(ptr unsafe.Pointer) RenderTexture2D {
 	return *(*RenderTexture2D)(ptr)
 }
 
+// TraceLogLevel parameter of trace log message
 type TraceLogLevel int
 
 // Trace log level
diff --git a/raylib/raymath.go b/raylib/raymath.go
index 0d4bbae..c616d16 100644
--- a/raylib/raymath.go
+++ b/raylib/raymath.go
@@ -60,7 +60,7 @@ func Vector2Negate(v Vector2) Vector2 {
 	return NewVector2(-v.X, -v.Y)
 }
 
-// Vector2Divide - Divide vector by vector
+// Vector2DivideV - Divide vector by vector
 func Vector2DivideV(v1, v2 Vector2) Vector2 {
 	return NewVector2(v1.X/v2.X, v1.Y/v2.Y)
 }
@@ -174,8 +174,6 @@ func Vector3CrossProduct(v1, v2 Vector3) Vector3 {
 
 // Vector3Perpendicular - Calculate one vector perpendicular vector
 func Vector3Perpendicular(v Vector3) Vector3 {
-	result := Vector3{}
-
 	min := math.Abs(float64(v.X))
 	cardinalAxis := NewVector3(1.0, 0.0, 0.0)
 
@@ -188,7 +186,7 @@ func Vector3Perpendicular(v Vector3) Vector3 {
 		cardinalAxis = NewVector3(0.0, 0.0, 1.0)
 	}
 
-	result = Vector3CrossProduct(v, cardinalAxis)
+	result := Vector3CrossProduct(v, cardinalAxis)
 
 	return result
 }