diff --git a/src/asm/lexer.c b/src/asm/lexer.c
index 45a44a03..e07553d3 100644
--- a/src/asm/lexer.c
+++ b/src/asm/lexer.c
@@ -1457,9 +1457,12 @@ static void readString(void)
 		// We'll be staying in the string, so we can safely consume the char
 		shiftChars(1);
 
-		// Handle CRLF (in multiline strings only, already handled above otherwise)
-		if (c == '\r' && peek(0) == '\n') {
-			shiftChars(1);
+		// Handle '\r' or '\n' (in multiline strings only, already handled above otherwise)
+		if (c == '\r' || c == '\n') {
+			/* Handle CRLF before nextLine() since shiftChars updates colNo */
+			if (c == '\r' && peek(0) == '\n')
+				shiftChars(1);
+			nextLine();
 			c = '\n';
 		}
 
diff --git a/test/asm/multi-line-strings.asm b/test/asm/multi-line-strings.asm
index 9b77bfb1..e39635db 100644
--- a/test/asm/multi-line-strings.asm
+++ b/test/asm/multi-line-strings.asm
@@ -30,3 +30,5 @@ EMPTY3 EQUS """"""
 EMPTY4 EQUS """\ ; comment
 """
 	PRINTLN STRCAT("(", "{EMPTY1}", "{EMPTY2}", "{EMPTY3}", "{EMPTY4}", ")")
+
+	warn "check the line number"
diff --git a/test/asm/multi-line-strings.err b/test/asm/multi-line-strings.err
index e69de29b..9f139531 100644
--- a/test/asm/multi-line-strings.err
+++ b/test/asm/multi-line-strings.err
@@ -0,0 +1,2 @@
+warning: multi-line-strings.asm(34): [-Wuser]
+    check the line number