diff --git a/test/assert-test.cc b/test/assert-test.cc
index b7883a9e..d9167fac 100644
--- a/test/assert-test.cc
+++ b/test/assert-test.cc
@@ -25,7 +25,7 @@
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <cppformat/format.h>
+#include "cppformat/format.h"
 #include "gtest/gtest.h"
 
 #if GTEST_HAS_DEATH_TEST
diff --git a/test/find-package-test/main.cpp b/test/find-package-test/main.cpp
index 3563e606..8736017b 100644
--- a/test/find-package-test/main.cpp
+++ b/test/find-package-test/main.cpp
@@ -1,4 +1,4 @@
-#include <cppformat/format.h>
+#include "cppformat/format.h"
 
 int main(int argc, char** argv)
 {
diff --git a/test/format-impl-test.cc b/test/format-impl-test.cc
index edff46e6..187dcbdf 100644
--- a/test/format-impl-test.cc
+++ b/test/format-impl-test.cc
@@ -29,7 +29,7 @@
 #include "test-assert.h"
 
 // Include format.cc instead of format.h to test implementation-specific stuff.
-#include <cppformat/format.cc>
+#include "cppformat/format.cc"
 
 #include <cstring>
 
diff --git a/test/format-test.cc b/test/format-test.cc
index 612f7d88..dd7a1c7c 100644
--- a/test/format-test.cc
+++ b/test/format-test.cc
@@ -45,7 +45,7 @@
 // Test that the library compiles if None is defined to 0 as done by xlib.h.
 #define None 0
 
-#include <cppformat/format.h>
+#include "cppformat/format.h"
 #include "util.h"
 #include "mock-allocator.h"
 #include "gtest-extra.h"
diff --git a/test/gtest-extra.h b/test/gtest-extra.h
index 73b0e3b3..10b2bdea 100644
--- a/test/gtest-extra.h
+++ b/test/gtest-extra.h
@@ -31,14 +31,14 @@
 #include <string>
 #include <gtest/gtest.h>
 
-#include <cppformat/format.h>
+#include "cppformat/format.h"
 
 #ifndef FMT_USE_FILE_DESCRIPTORS
 # define FMT_USE_FILE_DESCRIPTORS 0
 #endif
 
 #if FMT_USE_FILE_DESCRIPTORS
-# include <cppformat/posix.h>
+# include "cppformat/posix.h"
 #endif
 
 #define FMT_TEST_THROW_(statement, expected_exception, expected_message, fail) \
diff --git a/test/header-only-test.cc b/test/header-only-test.cc
index 7028d4ba..5a16ffda 100644
--- a/test/header-only-test.cc
+++ b/test/header-only-test.cc
@@ -25,4 +25,4 @@
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <cppformat/format.h>
+#include "cppformat/format.h"
diff --git a/test/header-only-test2.cc b/test/header-only-test2.cc
index b5947b17..b54ae4b8 100644
--- a/test/header-only-test2.cc
+++ b/test/header-only-test2.cc
@@ -25,4 +25,4 @@
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <cppformat/format.h>
+#include "cppformat/format.h"
diff --git a/test/macro-test.cc b/test/macro-test.cc
index 2af1463d..849d608f 100644
--- a/test/macro-test.cc
+++ b/test/macro-test.cc
@@ -29,7 +29,7 @@
 #include <gtest/gtest.h>
 
 #define FMT_USE_VARIADIC_TEMPLATES 0
-#include <cppformat/format.h>
+#include "cppformat/format.h"
 
 #define IDENTITY(x) x
 
diff --git a/test/posix-test.cc b/test/posix-test.cc
index 3021073f..03ac43d8 100644
--- a/test/posix-test.cc
+++ b/test/posix-test.cc
@@ -29,7 +29,7 @@
 #include <cstring>
 
 #include "gtest-extra.h"
-#include <cppformat/posix.h>
+#include "cppformat/posix.h"
 #include "util.h"
 
 #ifdef fileno
diff --git a/test/printf-test.cc b/test/printf-test.cc
index cd52373a..7c57136c 100644
--- a/test/printf-test.cc
+++ b/test/printf-test.cc
@@ -29,7 +29,7 @@
 #include <climits>
 #include <cstring>
 
-#include <cppformat/format.h>
+#include "cppformat/format.h"
 #include "gtest-extra.h"
 #include "util.h"
 
diff --git a/test/util-test.cc b/test/util-test.cc
index a9ab78ea..7d816e87 100644
--- a/test/util-test.cc
+++ b/test/util-test.cc
@@ -47,7 +47,7 @@
 # include <windows.h>
 #endif
 
-#include <cppformat/format.h>
+#include "cppformat/format.h"
 
 #undef max
 
diff --git a/test/util.h b/test/util.h
index 986f1130..7a51c60b 100644
--- a/test/util.h
+++ b/test/util.h
@@ -29,7 +29,7 @@
 #include <cstdio>
 #include <string>
 
-#include <cppformat/posix.h>
+#include "cppformat/posix.h"
 
 enum {BUFFER_SIZE = 256};