diff --git a/include/fmt/std.h b/include/fmt/std.h
index 600ba7b111b7d..91f09f9a076d5 100644
--- a/include/fmt/std.h
+++ b/include/fmt/std.h
@@ -13,7 +13,6 @@
 #include <cstdlib>
 #include <exception>
 #include <memory>
-#include <source_location>
 #include <thread>
 #include <type_traits>
 #include <typeinfo>
@@ -252,7 +251,7 @@ struct formatter<std::source_location, Char,
     out = detail::write<Char>(out, loc.line());
     out = detail::write<Char>(out, Char(':'));
     out = detail::write<Char>(out, loc.column());
-    out = detail::write<Char>(out, Char(' '));
+    out = detail::write<Char>(out, ": ");
     out = detail::write<Char>(out, loc.function_name());
     return out;
   }
diff --git a/test/std-test.cc b/test/std-test.cc
index 0931aa33d1472..7681a4322425b 100644
--- a/test/std-test.cc
+++ b/test/std-test.cc
@@ -67,7 +67,7 @@ TEST(std_test, source_location) {
   // We don't know the full path of this file so we only check the end of the
   // path.
   EXPECT_TRUE(fmt::format("{}", std::source_location::current())
-                  .ends_with("std-test.cc:69:3 virtual void "
+                  .ends_with("std-test.cc:69:3: virtual void "
                              "std_test_source_location_Test::TestBody()"));
 }
 #endif