diff --git a/tests/test_mmap.cpp b/tests/test_mmap.cpp
index 800ffc2e6..78549d687 100644
--- a/tests/test_mmap.cpp
+++ b/tests/test_mmap.cpp
@@ -60,6 +60,9 @@ std::vector<uint8_t> make_binary_data(
 //      on top of the existing File1 again
 
 TEST(TestMmap, mmap_flatcodes) {
+#ifdef _AIX
+    GTEST_SKIP() << "Skipping test on AIX.";
+#endif
     // generate data
     const size_t nt = 1000;
     const size_t nq = 10;
@@ -161,6 +164,9 @@ TEST(TestMmap, mmap_flatcodes) {
 }
 
 TEST(TestMmap, mmap_binary_flatcodes) {
+#ifdef _AIX
+    GTEST_SKIP() << "Skipping test on AIX.";
+#endif
     // generate data
     const size_t nt = 1000;
     const size_t nq = 10;