diff --git a/src/scanner.c b/src/scanner.c
index 5fb4f976..cca8f7ab 100644
--- a/src/scanner.c
+++ b/src/scanner.c
@@ -811,7 +811,7 @@ static inline bool scan_literal_content(Scanner *scanner, TSLexer *lexer) {
                 return true;
             }
         } else if (lexer->lookahead == '\\') {
-            if (literal->allows_interpolation) {
+            if (literal->allows_interpolation && literal->type != REGEX_START) {
                 if (has_content) {
                     lexer->mark_end(lexer);
                     lexer->result_symbol = STRING_CONTENT;
diff --git a/test/corpus/literals.txt b/test/corpus/literals.txt
index 95efd9f6..cd74532d 100644
--- a/test/corpus/literals.txt
+++ b/test/corpus/literals.txt
@@ -2080,6 +2080,35 @@ regular expression with interpolation
   (regex
     (string_content)))
 
+==========================================
+regular expression with character classes
+==========================================
+
+/\d+/
+/\w+/
+/[[:alpha:]]/
+/[[[:alpha:]]\d]+/
+/[[[:alpha:]]\d]+/.match("foo")
+
+---
+
+(program
+  (regex
+    (string_content))
+  (regex
+    (string_content))
+  (regex
+    (string_content))
+  (regex
+    (string_content))
+  (call
+    receiver: (regex
+      (string_content))
+    method: (identifier)
+    arguments: (argument_list
+      (string
+        (string_content)))))
+
 =======================================================
 percent r regular expression with unbalanced delimiters
 =======================================================