diff --git a/src/corrupter.c b/src/corrupter.c
index d8ef186..abddec5 100644
--- a/src/corrupter.c
+++ b/src/corrupter.c
@@ -61,7 +61,7 @@ enum Interoperation_Result corrupt_byte(Interoperation_Input_Vars) {
 	// generate bit mask
 	byte damage_left = param->threshold;
 	bool bit_mask[CHAR_BIT] = {false};
-	uint8_t probability = param->probability;
+	uint16_t probability = param->probability;
 
 	for (byte bit = 0; bit < CHAR_BIT; bit++)
 		if (get_chance(probability) && damage_left > 0) {