diff --git a/src/Log.hxx b/src/Log.hxx
index 5bc8fe2bd..22383a49c 100644
--- a/src/Log.hxx
+++ b/src/Log.hxx
@@ -23,7 +23,7 @@
 #include "LogLevel.hxx"
 
 #include <fmt/core.h>
-#if FMT_VERSION >= 80000
+#if FMT_VERSION >= 80000 && FMT_VERSION < 90000
 #include <fmt/format.h>
 #endif
 
diff --git a/src/client/Response.hxx b/src/client/Response.hxx
index 7b4aa68cc..a60625389 100644
--- a/src/client/Response.hxx
+++ b/src/client/Response.hxx
@@ -23,7 +23,7 @@
 #include "protocol/Ack.hxx"
 
 #include <fmt/core.h>
-#if FMT_VERSION >= 80000
+#if FMT_VERSION >= 80000 && FMT_VERSION < 90000
 #include <fmt/format.h>
 #endif
 
diff --git a/src/io/BufferedOutputStream.hxx b/src/io/BufferedOutputStream.hxx
index aada3740e..1dcdd055f 100644
--- a/src/io/BufferedOutputStream.hxx
+++ b/src/io/BufferedOutputStream.hxx
@@ -34,7 +34,7 @@
 #include "util/DynamicFifoBuffer.hxx"
 
 #include <fmt/core.h>
-#if FMT_VERSION >= 80000
+#if FMT_VERSION >= 80000 && FMT_VERSION < 90000
 #include <fmt/format.h>
 #endif