diff --git a/lib/preprocessor.cpp b/lib/preprocessor.cpp
index db92acb4c..4033f65a7 100644
--- a/lib/preprocessor.cpp
+++ b/lib/preprocessor.cpp
@@ -458,7 +458,8 @@ std::string Preprocessor::removeComments(const std::string &str, const std::stri
                     code << str[i++];
                 }
                 code << '}';
-            }
+            } else
+                --i;
         } else if (ch == '#' && previous == '\n') {
             code << ch;
             previous = ch;
diff --git a/test/testpreprocessor.cpp b/test/testpreprocessor.cpp
index 68b2e2add..b4c05f0c6 100644
--- a/test/testpreprocessor.cpp
+++ b/test/testpreprocessor.cpp
@@ -383,6 +383,7 @@ private:
 
         ASSERT_EQUALS(" __asm123", preprocessor.removeComments(" __asm123", "3837.cpp"));
         ASSERT_EQUALS("\" __asm { ; } \"", preprocessor.removeComments("\" __asm { ; } \"", "3837.cpp"));
+        ASSERT_EQUALS("__asm__ volatile { \"\" }", preprocessor.removeComments("__asm__ volatile { \"\" }", "3837.cpp"));
     }