diff --git a/src/libutil/url-parts.hh b/src/libutil/url-parts.hh
index 5c5a30dc2..07bc8d0cd 100644
--- a/src/libutil/url-parts.hh
+++ b/src/libutil/url-parts.hh
@@ -8,7 +8,7 @@ namespace nix {
 
 // URI stuff.
 const static std::string pctEncoded = "(?:%[0-9a-fA-F][0-9a-fA-F])";
-const static std::string schemeRegex = "(?:[a-z][a-z0-9+.-]*)";
+const static std::string schemeNameRegex = "(?:[a-z][a-z0-9+.-]*)";
 const static std::string ipv6AddressSegmentRegex = "[0-9a-fA-F:]+(?:%\\w+)?";
 const static std::string ipv6AddressRegex = "(?:\\[" + ipv6AddressSegmentRegex + "\\]|" + ipv6AddressSegmentRegex + ")";
 const static std::string unreservedRegex = "(?:[a-zA-Z0-9-._~])";
diff --git a/src/libutil/url.cc b/src/libutil/url.cc
index f2d5f1782..e9acd67d0 100644
--- a/src/libutil/url.cc
+++ b/src/libutil/url.cc
@@ -14,7 +14,7 @@ std::regex revRegex(revRegexS, std::regex::ECMAScript);
 ParsedURL parseURL(const std::string & url)
 {
     static std::regex uriRegex(
-        "((" + schemeRegex + "):"
+        "((" + schemeNameRegex + "):"
         + "(?:(?://(" + authorityRegex + ")(" + absPathRegex + "))|(/?" + pathRegex + ")))"
         + "(?:\\?(" + queryRegex + "))?"
         + "(?:#(" + queryRegex + "))?",