diff --git a/contrib/plugins/hotblocks.c b/contrib/plugins/hotblocks.c
index 3942a2ca54..37435a3fc7 100644
--- a/contrib/plugins/hotblocks.c
+++ b/contrib/plugins/hotblocks.c
@@ -102,7 +102,7 @@ static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
 {
     ExecCount *cnt;
     uint64_t pc = qemu_plugin_tb_vaddr(tb);
-    unsigned long insns = qemu_plugin_tb_n_insns(tb);
+    size_t insns = qemu_plugin_tb_n_insns(tb);
     uint64_t hash = pc ^ insns;
 
     g_mutex_lock(&lock);
diff --git a/tests/plugin/bb.c b/tests/plugin/bb.c
index e4cc7fdd6e..de09bdde4e 100644
--- a/tests/plugin/bb.c
+++ b/tests/plugin/bb.c
@@ -72,7 +72,7 @@ static void vcpu_tb_exec(unsigned int cpu_index, void *udata)
     CPUCount *count = max_cpus ?
         g_ptr_array_index(counts, cpu_index) : &inline_count;
 
-    unsigned long n_insns = (unsigned long)udata;
+    uintptr_t n_insns = (uintptr_t)udata;
     g_mutex_lock(&count->lock);
     count->insn_count += n_insns;
     count->bb_count++;
@@ -81,7 +81,7 @@ static void vcpu_tb_exec(unsigned int cpu_index, void *udata)
 
 static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
 {
-    unsigned long n_insns = qemu_plugin_tb_n_insns(tb);
+    size_t n_insns = qemu_plugin_tb_n_insns(tb);
 
     if (do_inline) {
         qemu_plugin_register_vcpu_tb_exec_inline(tb, QEMU_PLUGIN_INLINE_ADD_U64,