diff --git a/support/test/src/utils/path_test.cpp b/support/test/src/utils/path_test.cpp
index ab0ca9df..ff1b7a99 100644
--- a/support/test/src/utils/path_test.cpp
+++ b/support/test/src/utils/path_test.cpp
@@ -98,7 +98,6 @@ TEST(utils_path, get_slash) {
 
 TEST(utils_path, combine) {
   auto s = utils::path::combine(R"(\test\path)", {});
-
 #if defined(_WIN32)
   EXPECT_STREQ(R"(\test\path)", s.c_str());
 #else
@@ -118,6 +117,20 @@ TEST(utils_path, combine) {
 #else
   EXPECT_STREQ("/test/path/again", s.c_str());
 #endif
+
+#if defined(_WIN32)
+  s = utils::path::combine(R"(R:\test)", {R"(\path)", R"(\again\)"});
+  EXPECT_STREQ(R"(r:\test\path\again)", s.c_str());
+
+  s = utils::path::combine("R:", {R"(\path)", R"(\again\)"});
+  EXPECT_STREQ(R"(r:\path\again)", s.c_str());
+
+  s = utils::path::combine("R:", {});
+  EXPECT_STREQ("r:", s.c_str());
+
+  s = utils::path::combine("R:", {"\\"});
+  EXPECT_STREQ("r:", s.c_str());
+#endif
 }
 
 TEST(utils_path, format_path) {