diff --git a/include/spdlog/common.h b/include/spdlog/common.h
index 09ffefbbf..f97fd48c0 100644
--- a/include/spdlog/common.h
+++ b/include/spdlog/common.h
@@ -46,11 +46,13 @@
 
 #if !defined(SPDLOG_USE_STD_FORMAT) && FMT_VERSION >= 80000 // backward compatibility with fmt versions older than 8
 #    define SPDLOG_FMT_RUNTIME(format_string) fmt::runtime(format_string)
+#    define SPDLOG_FMT_STRING(format_string) FMT_STRING(format_string)
 #    if defined(SPDLOG_WCHAR_FILENAMES) || defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT)
 #        include <spdlog/fmt/xchar.h>
 #    endif
 #else
 #    define SPDLOG_FMT_RUNTIME(format_string) format_string
+#    define SPDLOG_FMT_STRING(format_string) format_string
 #endif
 
 // visual studio up to 2013 does not support noexcept nor constexpr
@@ -308,7 +310,7 @@ struct file_event_handlers
 {
     file_event_handlers()
         : before_open(nullptr)
-        , after_open (nullptr)
+        , after_open(nullptr)
         , before_close(nullptr)
         , after_close(nullptr)
     {}
diff --git a/include/spdlog/details/fmt_helper.h b/include/spdlog/details/fmt_helper.h
index 1a60bc0dc..d3c355d53 100644
--- a/include/spdlog/details/fmt_helper.h
+++ b/include/spdlog/details/fmt_helper.h
@@ -107,7 +107,7 @@ inline void pad2(int n, memory_buf_t &dest)
     }
     else // unlikely, but just in case, let fmt deal with it
     {
-        fmt_lib::format_to(std::back_inserter(dest), "{:02}", n);
+        fmt_lib::format_to(std::back_inserter(dest), SPDLOG_FMT_STRING("{:02}"), n);
     }
 }
 
diff --git a/include/spdlog/fmt/bin_to_hex.h b/include/spdlog/fmt/bin_to_hex.h
index 2a5d02c93..47fec05b9 100644
--- a/include/spdlog/fmt/bin_to_hex.h
+++ b/include/spdlog/fmt/bin_to_hex.h
@@ -241,7 +241,7 @@ struct formatter<spdlog::details::dump_info<T>, char>
 
         if (put_positions)
         {
-            spdlog::fmt_lib::format_to(inserter, "{:04X}: ", pos);
+            spdlog::fmt_lib::format_to(inserter, SPDLOG_FMT_STRING("{:04X}: "), pos);
         }
     }
 };
diff --git a/include/spdlog/logger.h b/include/spdlog/logger.h
index b97994db5..14c719fc5 100644
--- a/include/spdlog/logger.h
+++ b/include/spdlog/logger.h
@@ -33,7 +33,7 @@
         {                                                                                                                                  \
             if (location.filename)                                                                                                         \
             {                                                                                                                              \
-                err_handler_(fmt_lib::format("{} [{}({})]", ex.what(), location.filename, location.line));                                 \
+                err_handler_(fmt_lib::format(SPDLOG_FMT_STRING("{} [{}({})]"), ex.what(), location.filename, location.line));              \
             }                                                                                                                              \
             else                                                                                                                           \
             {                                                                                                                              \
diff --git a/include/spdlog/sinks/daily_file_sink.h b/include/spdlog/sinks/daily_file_sink.h
index bb566e187..b07b771d6 100644
--- a/include/spdlog/sinks/daily_file_sink.h
+++ b/include/spdlog/sinks/daily_file_sink.h
@@ -32,8 +32,8 @@ struct daily_filename_calculator
     {
         filename_t basename, ext;
         std::tie(basename, ext) = details::file_helper::split_by_extension(filename);
-        return fmt_lib::format(
-            SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}{}"), basename, now_tm.tm_year + 1900, now_tm.tm_mon + 1, now_tm.tm_mday, ext);
+        return fmt_lib::format(SPDLOG_FMT_STRING(SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}{}")), basename, now_tm.tm_year + 1900,
+            now_tm.tm_mon + 1, now_tm.tm_mday, ext);
     }
 };
 
@@ -76,7 +76,7 @@ struct daily_filename_format_calculator
         return buf;
 #else
         // generate fmt datetime format string, e.g. {:%Y-%m-%d}.
-        filename_t fmt_filename = fmt::format(SPDLOG_FILENAME_T("{{:{}}}"), filename);
+        filename_t fmt_filename = fmt::format(SPDLOG_FMT_STRING(SPDLOG_FILENAME_T("{{:{}}}")), filename);
 #    if defined(_MSC_VER) && defined(SPDLOG_WCHAR_FILENAMES) // for some reason msvc doesn't allow fmt::runtime(..) with wchar here
         return fmt::format(fmt_filename, now_tm);
 #    else