diff --git a/src/pal/pal_open_enclave.h b/src/pal/pal_open_enclave.h
index bbc1096..3487d3f 100644
--- a/src/pal/pal_open_enclave.h
+++ b/src/pal/pal_open_enclave.h
@@ -74,7 +74,7 @@ namespace snmalloc
     static uint64_t get_entropy64()
     {
       uint64_t result = 0;
-      if (oe_random(&result, sizeof(result)) != 0)
+      if (oe_random(&result, sizeof(result)) != OE_OK)
         error("Failed to get system randomness");
       return result;
     }
diff --git a/src/test/func/fixed_region/fixed_region.cc b/src/test/func/fixed_region/fixed_region.cc
index 7e77d4b..09d68ee 100644
--- a/src/test/func/fixed_region/fixed_region.cc
+++ b/src/test/func/fixed_region/fixed_region.cc
@@ -1,5 +1,6 @@
 #define SNMALLOC_SGX
 #define OPEN_ENCLAVE
+#define OE_OK 0
 #define OPEN_ENCLAVE_SIMULATION
 #include <iostream>
 #include <snmalloc.h>
diff --git a/src/test/func/two_alloc_types/alloc1.cc b/src/test/func/two_alloc_types/alloc1.cc
index 0f3a9cb..11a3b23 100644
--- a/src/test/func/two_alloc_types/alloc1.cc
+++ b/src/test/func/two_alloc_types/alloc1.cc
@@ -1,5 +1,6 @@
 #undef SNMALLOC_USE_LARGE_CHUNKS
 #define OPEN_ENCLAVE
+#define OE_OK 0
 #define OPEN_ENCLAVE_SIMULATION
 #define NO_BOOTSTRAP_ALLOCATOR
 #define SNMALLOC_EXPOSE_PAGEMAP