diff --git a/arch/tids990/decoder.cc b/arch/tids990/decoder.cc
index 00951405..9a308c38 100644
--- a/arch/tids990/decoder.cc
+++ b/arch/tids990/decoder.cc
@@ -8,7 +8,7 @@
 #include "lib/decoders/fluxpattern.h"
 #include "lib/sector.h"
 #include <string.h>
-#include <fmt/format.h>
+#include "fmt/format.h"
 
 /* The Texas Instruments DS990 uses MFM with a scheme similar to a simplified
  * version of the IBM record scheme (it's actually easier to parse than IBM).
diff --git a/arch/tids990/encoder.cc b/arch/tids990/encoder.cc
index fd991523..f7d88392 100644
--- a/arch/tids990/encoder.cc
+++ b/arch/tids990/encoder.cc
@@ -7,7 +7,7 @@
 #include "lib/image.h"
 #include "arch/tids990/tids990.pb.h"
 #include "lib/encoders/encoders.pb.h"
-#include <fmt/format.h>
+#include "fmt/format.h"
 
 static int charToInt(char c)
 {
diff --git a/lib/core/globals.h b/lib/core/globals.h
index c3b3ace1..b249aac6 100644
--- a/lib/core/globals.h
+++ b/lib/core/globals.h
@@ -16,7 +16,7 @@
 #include <variant>
 #include <optional>
 #include <regex>
-#include <fmt/format.h>
+#include "fmt/format.h"
 
 #if defined(_WIN32) || defined(__WIN32__)
 #include <direct.h>
diff --git a/lib/fluxsink/a2rfluxsink.cc b/lib/fluxsink/a2rfluxsink.cc
index 870a9e79..75e320a3 100644
--- a/lib/fluxsink/a2rfluxsink.cc
+++ b/lib/fluxsink/a2rfluxsink.cc
@@ -14,7 +14,7 @@
 #include <fstream>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <fmt/chrono.h>
+#include "fmt/chrono.h"
 
 namespace
 {
diff --git a/lib/globals.h b/lib/globals.h
index 0c197632..96f8f0d6 100644
--- a/lib/globals.h
+++ b/lib/globals.h
@@ -16,7 +16,7 @@
 #include <variant>
 #include <optional>
 #include <regex>
-#include <fmt/format.h>
+#include "fmt/format.h"
 
 #if defined(_WIN32) || defined(__WIN32__)
 #include <direct.h>
diff --git a/lib/vfs/cpmfs.cc b/lib/vfs/cpmfs.cc
index 525555c3..fb7c67cd 100644
--- a/lib/vfs/cpmfs.cc
+++ b/lib/vfs/cpmfs.cc
@@ -1,7 +1,7 @@
 #include "lib/core/globals.h"
 #include "lib/vfs/vfs.h"
 #include "lib/config.pb.h"
-#include <fmt/format.h>
+#include "fmt/format.h"
 #include <regex>
 
 class CpmFsFilesystem : public Filesystem, public HasBitmap, public HasMount
diff --git a/lib/vfs/microdos.cc b/lib/vfs/microdos.cc
index 9987eded..d95bddc9 100644
--- a/lib/vfs/microdos.cc
+++ b/lib/vfs/microdos.cc
@@ -2,7 +2,7 @@
 #include "lib/vfs/vfs.h"
 #include "lib/config.pb.h"
 #include "lib/core/utils.h"
-#include <fmt/format.h>
+#include "fmt/format.h"
 
 /* See https://www.hp9845.net/9845/projects/hpdir/#lif_filesystem for
  * a description. */
diff --git a/lib/vfs/vfs.h b/lib/vfs/vfs.h
index 7f8c1b25..74bda714 100644
--- a/lib/vfs/vfs.h
+++ b/lib/vfs/vfs.h
@@ -2,7 +2,7 @@
 #define VFS_H
 
 #include "lib/core/bytes.h"
-#include <fmt/format.h>
+#include "fmt/format.h"
 
 class Sector;
 class Image;
diff --git a/scripts/mkdoc.cc b/scripts/mkdoc.cc
index 287d4ca3..a26ecf9a 100644
--- a/scripts/mkdoc.cc
+++ b/scripts/mkdoc.cc
@@ -1,7 +1,7 @@
 #include "lib/globals.h"
 #include "lib/proto.h"
 #include "lib/flags.h"
-#include <fmt/format.h>
+#include "fmt/format.h"
 
 extern const std::map<std::string, const ConfigProto*> formats;
 
diff --git a/scripts/mkdocindex.cc b/scripts/mkdocindex.cc
index cfdaad12..bdf767a0 100644
--- a/scripts/mkdocindex.cc
+++ b/scripts/mkdocindex.cc
@@ -1,7 +1,7 @@
 #include "lib/globals.h"
 #include "lib/proto.h"
 #include "lib/flags.h"
-#include <fmt/format.h>
+#include "fmt/format.h"
 
 extern const std::map<std::string, const ConfigProto*> formats;
 
diff --git a/scripts/protoencode.cc b/scripts/protoencode.cc
index bd81f0e6..12e4ebe9 100644
--- a/scripts/protoencode.cc
+++ b/scripts/protoencode.cc
@@ -2,7 +2,7 @@
 #include <google/protobuf/text_format.h>
 #include <google/protobuf/io/zero_copy_stream_impl.h>
 #include <fstream>
-#include <fmt/format.h>
+#include "fmt/format.h"
 #include "tests/testproto.pb.h"
 #include "lib/config.pb.h"
 #include <sstream>
diff --git a/src/fe-testdevices.cc b/src/fe-testdevices.cc
index 8aac8c1c..373d525b 100644
--- a/src/fe-testdevices.cc
+++ b/src/fe-testdevices.cc
@@ -1,7 +1,7 @@
 #include "lib/core/globals.h"
 #include "lib/flags.h"
 #include "lib/usb/usbfinder.h"
-#include <fmt/format.h>
+#include "fmt/format.h"
 
 static FlagGroup flags;
 
diff --git a/src/fluxengine.cc b/src/fluxengine.cc
index 3f874474..56688998 100644
--- a/src/fluxengine.cc
+++ b/src/fluxengine.cc
@@ -1,6 +1,6 @@
 #include "lib/core/globals.h"
 #include "lib/proto.h"
-#include <fmt/format.h>
+#include "fmt/format.h"
 
 typedef int command_cb(int agrc, const char* argv[]);
 
diff --git a/tests/configs.cc b/tests/configs.cc
index 6ef0c766..8d4c8691 100644
--- a/tests/configs.cc
+++ b/tests/configs.cc
@@ -2,7 +2,7 @@
 #include "lib/proto.h"
 #include "lib/flags.h"
 #include "lib/core/bytes.h"
-#include <fmt/format.h>
+#include "fmt/format.h"
 
 extern const std::map<std::string, const ConfigProto*> formats;