diff --git a/src/scanner.c b/src/scanner.c
index 269f6b2a..a0ec91cb 100644
--- a/src/scanner.c
+++ b/src/scanner.c
@@ -214,6 +214,9 @@ typedef struct {
 static inline void process_left_forward_slash(BlockCommentProcessing *processing, char current) {
     if (current == '*') {
         processing->nestingDepth += 1;
+    } else if (current == '/') {
+        processing->state = LeftForwardSlash;
+        return;
     }
     processing->state = Continuing;
 };
diff --git a/test/corpus/source_files.txt b/test/corpus/source_files.txt
index a7a000e2..dd76f1de 100644
--- a/test/corpus/source_files.txt
+++ b/test/corpus/source_files.txt
@@ -48,6 +48,13 @@ Nested block comments
 
 // ---
 
+/*
+  nested with extra slash between two nested block comments
+  /**///**/
+*/
+
+// ---
+
 ----
 
 (source_file
@@ -56,6 +63,8 @@ Nested block comments
   (block_comment)
   (line_comment)
   (block_comment)
+  (line_comment)
+  (block_comment)
   (line_comment))
 
 ============================================