diff --git a/builder.json b/builder.json
index cdb127746f..569b6547c4 100644
--- a/builder.json
+++ b/builder.json
@@ -19,5 +19,9 @@
                 ["dir", "/s", "/b"]
             ]
         }
+    },
+
+    "build_env": {
+        "ASAN_OPTIONS": "suppressions={source_dir}/tests/resources/suppressions_asan.txt"
     }
 }
diff --git a/source/posix/system_info.c b/source/posix/system_info.c
index 03961c88b2..b5a0edc87e 100644
--- a/source/posix/system_info.c
+++ b/source/posix/system_info.c
@@ -56,10 +56,9 @@ uint16_t aws_get_cpu_group_count(void) {
     return 1U;
 }
 
-AWS_SUPPRESS_ASAN static size_t s_numa_cpu_count_for_group(uint16_t group_idx) {
-    AWS_FATAL_ASSERT(g_numa_node_of_cpu_ptr);
-
-    size_t total_cpus = aws_system_info_processor_count();
+size_t aws_get_cpu_count_for_group(uint16_t group_idx) {
+    if (g_numa_node_of_cpu_ptr) {
+        size_t total_cpus = aws_system_info_processor_count();
 
         uint16_t cpu_count = 0;
         for (size_t i = 0; i < total_cpus; ++i) {
@@ -67,12 +66,7 @@ AWS_SUPPRESS_ASAN static size_t s_numa_cpu_count_for_group(uint16_t group_idx) {
                 cpu_count++;
             }
         }
-    return cpu_count;
-}
-
-size_t aws_get_cpu_count_for_group(uint16_t group_idx) {
-    if (g_numa_node_of_cpu_ptr) {
-        return s_numa_cpu_count_for_group(group_idx);
+        return cpu_count;
     }
 
     return aws_system_info_processor_count();
diff --git a/tests/resources/suppressions_asan.txt b/tests/resources/suppressions_asan.txt
new file mode 100644
index 0000000000..d3ecfe2d49
--- /dev/null
+++ b/tests/resources/suppressions_asan.txt
@@ -0,0 +1 @@
+interceptor_via_lib:libnuma.so
\ No newline at end of file