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-rw-r--r--gifed/src/block/packed.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/gifed/src/block/packed.rs b/gifed/src/block/packed.rs
index f091fb3..59da8c9 100644
--- a/gifed/src/block/packed.rs
+++ b/gifed/src/block/packed.rs
@@ -127,7 +127,7 @@ impl ImagePacked {
 	pub fn set_color_table_size(&mut self, size: u8) {
 		// The color table is the least significant already, don't do anything
 		// except select the bits
-		self.raw = size & 0b0_0_0_00_111;
+		self.raw |= size & 0b0_0_0_00_111;
 	}
 }
 
@@ -174,6 +174,6 @@ impl ScreenPacked {
 	}
 
 	pub fn set_color_table_size(&mut self, size: u8) {
-		self.raw = size & 0b0_0_0_00_111;
+		self.raw |= size & 0b0_0_0_00_111;
 	}
 }