diff --git a/src/libclang/preprocessor.cpp b/src/libclang/preprocessor.cpp
index d05c739..01b8189 100644
--- a/src/libclang/preprocessor.cpp
+++ b/src/libclang/preprocessor.cpp
@@ -736,11 +736,17 @@ detail::preprocessor_output detail::preprocess(const libclang_compile_config& co
     ts::flag    in_string(false), in_char(false);
     while (p)
     {
-        auto next = std::strpbrk(p.ptr(), "\"'#/"); // look for ", ', # or /
+        auto next = std::strpbrk(p.ptr(), R"(\"'#/)"); // look for \, ", ', # or /
         if (next && next > p.ptr())
             p.bump(std::size_t(next - p.ptr() - 1)); // subtract one to get before that character
 
-        if (in_char == false && starts_with(p, "\"")) // starts with "
+        if (starts_with(p, R"(\\)")) // starts with two backslashes
+            p.bump(2u);
+        else if (starts_with(p, R"(\")")) // starts with \"
+            p.bump(2u);
+        else if (starts_with(p, R"(\')")) // starts with \'
+            p.bump(2u);
+        else if (in_char == false && starts_with(p, R"(")")) // starts with "
         {
             p.bump();
             in_string.toggle();
@@ -752,10 +758,6 @@ detail::preprocessor_output detail::preprocess(const libclang_compile_config& co
         }
         else if (in_string == true || in_char == true)
             p.bump();
-        else if (starts_with(p, "\\\"")) // starts with \"
-            p.bump(2u);
-        else if (starts_with(p, "\\'")) // starts with \'
-            p.bump(2u);
         else if (auto macro = parse_macro(p, result, file_depth == 0u))
         {
             if (logger.is_verbose())