diff --git a/kern/openssl.h b/kern/openssl.h
index cad4f12ce..590291873 100644
--- a/kern/openssl.h
+++ b/kern/openssl.h
@@ -35,10 +35,6 @@ struct ssl_data_event_t {
     s32 version;
 };
 
-struct {
-    __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
-} tls_events SEC(".maps");
-
 struct connect_event_t {
     u64 timestamp_ns;
     u32 pid;
@@ -48,10 +44,6 @@ struct connect_event_t {
     char comm[TASK_COMM_LEN];
 };
 
-struct {
-    __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
-} connect_events SEC(".maps");
-
 struct active_ssl_buf {
     /*
      * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
@@ -67,6 +59,23 @@ struct active_ssl_buf {
  * BPF MAPS
  ***********************************************************/
 
+
+struct {
+    __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+    __uint(key_size, sizeof(u32));
+    __uint(value_size, sizeof(u32));
+    __uint(max_entries, 1024);
+} tls_events SEC(".maps");
+
+
+struct {
+    __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+    __uint(key_size, sizeof(u32));
+    __uint(value_size, sizeof(u32));
+    __uint(max_entries, 1024);
+} connect_events SEC(".maps");
+
+
 // Key is thread ID (from bpf_get_current_pid_tgid).
 // Value is a pointer to the data buffer argument to SSL_write/SSL_read.
 struct {
diff --git a/kern/openssl_masterkey.h b/kern/openssl_masterkey.h
index 97fc626f8..db0ba3de6 100644
--- a/kern/openssl_masterkey.h
+++ b/kern/openssl_masterkey.h
@@ -57,6 +57,9 @@ struct ssl3_state_st {
 // bpf map
 struct {
     __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+    __uint(key_size, sizeof(u32));
+    __uint(value_size, sizeof(u32));
+    __uint(max_entries, 1024);
 } mastersecret_events SEC(".maps");
 
 struct {
diff --git a/kern/openssl_masterkey_3.0.h b/kern/openssl_masterkey_3.0.h
index 1c9f5daa0..dcdee6b0b 100644
--- a/kern/openssl_masterkey_3.0.h
+++ b/kern/openssl_masterkey_3.0.h
@@ -46,6 +46,9 @@ struct mastersecret_t {
 // bpf map
 struct {
     __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+    __uint(key_size, sizeof(u32));
+    __uint(value_size, sizeof(u32));
+    __uint(max_entries, 1024);
 } mastersecret_events SEC(".maps");
 
 struct {
diff --git a/kern/tc.h b/kern/tc.h
index d62275e6c..184f9da8b 100644
--- a/kern/tc.h
+++ b/kern/tc.h
@@ -50,6 +50,8 @@ struct net_ctx_t {
 ////////////////////// ebpf maps //////////////////////
 struct {
     __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+    __uint(key_size, sizeof(u32));
+    __uint(value_size, sizeof(u32));
     __uint(max_entries, 10240);
 } skb_events SEC(".maps");