diff --git a/colorm.go b/colorm.go
index 87c7999f2..3bbf9ae9f 100644
--- a/colorm.go
+++ b/colorm.go
@@ -176,7 +176,7 @@ func Monochrome() ColorM {
 	return monochrome
 }
 
-// Deprecated as of 1.2.0-alpha. Use Scale instead.
+// ScaleColor is deprecated as of 1.2.0-alpha. Use Scale instead.
 func ScaleColor(r, g, b, a float64) ColorM {
 	return ColorM{
 		initialized: true,
@@ -189,7 +189,7 @@ func ScaleColor(r, g, b, a float64) ColorM {
 	}
 }
 
-// Deprecated as of 1.2.0-alpha. Use Translate instead.
+// TranslateColor is deprecated as of 1.2.0-alpha. Use Translate instead.
 func TranslateColor(r, g, b, a float64) ColorM {
 	return ColorM{
 		initialized: true,
@@ -202,7 +202,7 @@ func TranslateColor(r, g, b, a float64) ColorM {
 	}
 }
 
-// Deprecated as of 1.2.0-alpha. Use RotateHue member function instead.
+// RotateHue is deprecated as of 1.2.0-alpha. Use RotateHue member function instead.
 func RotateHue(theta float64) ColorM {
 	c := ColorM{}
 	c.RotateHue(theta)
diff --git a/geom.go b/geom.go
index a9ecb012e..72d1bd43b 100644
--- a/geom.go
+++ b/geom.go
@@ -111,7 +111,7 @@ func (g *GeoM) SetElement(i, j int, element float64) {
 	g.es[i][j] = element
 }
 
-// Deprecated as of 1.2.0-alpha. Use Scale instead.
+// ScaleGeo is deprecated as of 1.2.0-alpha. Use Scale instead.
 func ScaleGeo(x, y float64) GeoM {
 	return GeoM{
 		initialized: true,
@@ -122,7 +122,7 @@ func ScaleGeo(x, y float64) GeoM {
 	}
 }
 
-// Deprecated as of 1.2.0-alpha. Use Translate instead.
+// TranslateGeo is deprecated as of 1.2.0-alpha. Use Translate instead.
 func TranslateGeo(tx, ty float64) GeoM {
 	return GeoM{
 		initialized: true,
@@ -133,7 +133,7 @@ func TranslateGeo(tx, ty float64) GeoM {
 	}
 }
 
-// Deprecated as of 1.2.0-alpha. Use Rotate instead.
+// RotateGeo is deprecated as of 1.2.0-alpha. Use Rotate instead.
 func RotateGeo(theta float64) GeoM {
 	sin, cos := math.Sincos(theta)
 	return GeoM{
diff --git a/imageparts.go b/imageparts.go
index 97a6356a4..5fb77e925 100644
--- a/imageparts.go
+++ b/imageparts.go
@@ -22,7 +22,7 @@ import (
 	"github.com/hajimehoshi/ebiten/internal/graphics"
 )
 
-// Deprecated (as of 1.1.0-alpha): Use ImageParts instead.
+// An ImagePart is deprecated (as of 1.1.0-alpha): Use ImageParts instead.
 type ImagePart struct {
 	Dst image.Rectangle
 	Src image.Rectangle