diff --git a/src/Area.vala b/src/Area.vala
index 5f861b6..12b5609 100644
--- a/src/Area.vala
+++ b/src/Area.vala
@@ -33,7 +33,7 @@ namespace CairoChart {
 			get {
 				return x1 - x0;
 			}
-			protected set {
+			set {
 				x1 = x0 + value;
 			}
 		}
@@ -45,7 +45,7 @@ namespace CairoChart {
 			get {
 				return y1 - y0;
 			}
-			protected set {
+			set {
 				y1 = y0 + value;
 			}
 		}
diff --git a/src/Range.vala b/src/Range.vala
index 1c5cf79..c967c9a 100644
--- a/src/Range.vala
+++ b/src/Range.vala
@@ -23,7 +23,7 @@ namespace CairoChart {
 			get {
 				return high - low;
 			}
-			protected set {
+			set {
 				high = low + value;
 			}
 		}