diff --git a/src/test/inputs/test_amf/5061-malicious.xml b/src/test/inputs/test_amf/5061-malicious.amf
similarity index 100%
rename from src/test/inputs/test_amf/5061-malicious.xml
rename to src/test/inputs/test_amf/5061-malicious.amf
diff --git a/src/test/inputs/test_amf/read-amf.xml b/src/test/inputs/test_amf/read-amf.amf
similarity index 100%
rename from src/test/inputs/test_amf/read-amf.xml
rename to src/test/inputs/test_amf/read-amf.amf
diff --git a/src/test/libslic3r/test_amf.cpp b/src/test/libslic3r/test_amf.cpp
index dcd73946b..72f0d8641 100644
--- a/src/test/libslic3r/test_amf.cpp
+++ b/src/test/libslic3r/test_amf.cpp
@@ -10,7 +10,7 @@ SCENARIO("Reading AMF file") {
     GIVEN("badly formed AMF file (missing vertices)") {
         auto model {new Slic3r::Model()};
         WHEN("AMF model is read") {
-            auto ret = Slic3r::IO::AMF::read(testfile("test_amf/5061-malicious.xml"),model);
+            auto ret = Slic3r::IO::AMF::read(testfile("test_amf/5061-malicious.amf"),model);
             THEN("read should return True") {
                 REQUIRE(ret);
             }
@@ -19,7 +19,7 @@ SCENARIO("Reading AMF file") {
     GIVEN("Ok formed AMF file") {
         auto model {new Slic3r::Model()};
         WHEN("AMF model is read") {
-            auto ret = Slic3r::IO::AMF::read(testfile("test_amf/read-amf.xml"),model);
+            auto ret = Slic3r::IO::AMF::read(testfile("test_amf/read-amf.amf"),model);
             THEN("read should return True") {
                 REQUIRE(ret);
             }