diff --git a/kern/bash_kern.c b/kern/bash_kern.c
index 67a4129d5..c789061c8 100644
--- a/kern/bash_kern.c
+++ b/kern/bash_kern.c
@@ -24,6 +24,9 @@ struct event {
 
 struct {
     __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+    __uint(key_size, sizeof(u32));
+    __uint(value_size, sizeof(u32));
+    __uint(max_entries, 1024);
 } events SEC(".maps");
 
 struct {
diff --git a/kern/boringssl_masterkey.h b/kern/boringssl_masterkey.h
index fc383614b..fe8ae03bf 100644
--- a/kern/boringssl_masterkey.h
+++ b/kern/boringssl_masterkey.h
@@ -83,6 +83,9 @@ struct ssl3_handshake_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/gnutls_kern.c b/kern/gnutls_kern.c
index 9fe68fb0c..ecf98a0ea 100644
--- a/kern/gnutls_kern.c
+++ b/kern/gnutls_kern.c
@@ -28,6 +28,9 @@ struct ssl_data_event_t {
 
 struct {
     __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+    __uint(key_size, sizeof(u32));
+    __uint(value_size, sizeof(u32));
+    __uint(max_entries, 1024);
 } gnutls_events SEC(".maps");
 
 /***********************************************************
diff --git a/kern/gotls_kern.c b/kern/gotls_kern.c
index 307ddf267..f109d8fc2 100644
--- a/kern/gotls_kern.c
+++ b/kern/gotls_kern.c
@@ -52,10 +52,16 @@ struct mastersecret_gotls_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_go_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);
 } events SEC(".maps");
 
 struct {
diff --git a/kern/mysqld_kern.c b/kern/mysqld_kern.c
index e5974683b..a11bf13bf 100644
--- a/kern/mysqld_kern.c
+++ b/kern/mysqld_kern.c
@@ -35,6 +35,9 @@ struct {
 
 struct {
     __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+    __uint(key_size, sizeof(u32));
+    __uint(value_size, sizeof(u32));
+    __uint(max_entries, 1024);
 } events SEC(".maps");
 
 SEC("uprobe/dispatch_command")
diff --git a/kern/nspr_kern.c b/kern/nspr_kern.c
index 5bd7cfcd3..594eefed6 100644
--- a/kern/nspr_kern.c
+++ b/kern/nspr_kern.c
@@ -28,6 +28,9 @@ struct ssl_data_event_t {
 
 struct {
     __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+    __uint(key_size, sizeof(u32));
+    __uint(value_size, sizeof(u32));
+    __uint(max_entries, 1024);
 } nspr_events SEC(".maps");
 
 /***********************************************************
diff --git a/kern/postgres_kern.c b/kern/postgres_kern.c
index 7ec791578..64f1a6137 100644
--- a/kern/postgres_kern.c
+++ b/kern/postgres_kern.c
@@ -23,6 +23,9 @@ struct data_t {
 
 struct {
     __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+    __uint(key_size, sizeof(u32));
+    __uint(value_size, sizeof(u32));
+    __uint(max_entries, 1024);
 } events SEC(".maps");
 
 // https://github.com/postgres/postgres/blob/7b7ed046cb2ad9f6efac90380757d5977f0f563f/src/backend/tcop/postgres.c#L987-L992