diff --git a/src/libslic3r/Config.cpp b/src/libslic3r/Config.cpp
index 629d8778d5..8522d59657 100644
--- a/src/libslic3r/Config.cpp
+++ b/src/libslic3r/Config.cpp
@@ -43,7 +43,7 @@ namespace Slic3r {
 //static const std::string CONFIG_INHERITS_KEY = "inherits";
 //static const std::string CONFIG_INSTANT_KEY = "instantiation";
 
-// Escape \n, \r and backslash
+// Escape double quotes, \n, \r and backslash
 std::string escape_string_cstyle(const std::string &str)
 {
     // Allocate a buffer twice the input string length,
@@ -58,9 +58,9 @@ std::string escape_string_cstyle(const std::string &str)
         } else if (c == '\n') {
             (*outptr ++) = '\\';
             (*outptr ++) = 'n';
-        } else if (c == '\\') {
-            (*outptr ++) = '\\';
-            (*outptr ++) = '\\';
+        } else if (c == '\\' || c == '"') {
+            (*outptr++) = '\\';
+            (*outptr++) = c;
         } else
             (*outptr ++) = c;
     }
@@ -117,7 +117,7 @@ std::string escape_strings_cstyle(const std::vector<std::string> &strs)
     return std::string(out.data(), outptr - out.data());
 }
 
-// Unescape \n, \r and backslash
+// Unescape double quotes, \n, \r and backslash
 bool unescape_string_cstyle(const std::string &str, std::string &str_out)
 {
     std::vector<char> out(str.size(), 0);