diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index eb2a3d43..bf6e9922 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -55,7 +55,7 @@ jobs:
   displayName: Linux
   pool:
     vmImage:
-     ubuntu-18.04
+     ubuntu-22.04
   strategy:
     matrix:
       Debug:
diff --git a/src/init.c b/src/init.c
index ca48fb10..6e401fc7 100644
--- a/src/init.c
+++ b/src/init.c
@@ -111,7 +111,7 @@ mi_decl_cache_align const mi_heap_t _mi_heap_empty = {
   0,                // cookie
   0,                // arena id
   { 0, 0 },         // keys
-  { {0}, {0}, 0, true },
+  { {0}, {0}, 0, true }, // random
   0,                // page count
   MI_BIN_FULL, 0,   // page retired min/max
   NULL,             // next