diff --git a/functions.js b/functions.js
index 369af8b..65891b1 100644
--- a/functions.js
+++ b/functions.js
@@ -627,6 +627,7 @@ const functions = {
 	},
 	spongebob(commandData) {
 		let newText = '';
+		let lastIsUpper = 0;
 		for (const letter of commandData.args) {
 			if (letter == ' ') {
 				newText += letter;
@@ -634,13 +635,15 @@ const functions = {
 			}
 			if (letter == 'i' || letter == 'I') {
 				newText += 'i';
+				lastIsUpper = 0;
 				continue;
 			}
 			if (letter == 'l' || letter == 'L') {
 				newText += 'L';
+				lastIsUpper = 1;
 				continue;
 			}
-			if (Math.random() > 0.5) {
+			if (lastIsUpper === 0) {
 				newText += letter.toUpperCase();
 			} else {
 				newText += letter.toLowerCase();