diff --git a/exosphere/src/configitem.c b/exosphere/src/configitem.c
index ed5a3221a..2e2923d82 100644
--- a/exosphere/src/configitem.c
+++ b/exosphere/src/configitem.c
@@ -8,7 +8,7 @@
 #include "fuse.h"
 #include "utils.h"
 
-int g_battery_profile = 0;
+static int g_battery_profile = 0;
 
 uint32_t configitem_set(enum ConfigItem item, uint64_t value) {
     if (item != CONFIGITEM_BATTERYPROFILE) {
diff --git a/exosphere/src/cpu_context.c b/exosphere/src/cpu_context.c
index c5e84f529..d91829618 100644
--- a/exosphere/src/cpu_context.c
+++ b/exosphere/src/cpu_context.c
@@ -4,7 +4,7 @@
 #include "timers.h"
 #include "utils.h"
 
-saved_cpu_context_t g_cpu_contexts[NUM_CPU_CORES] = {0};
+static saved_cpu_context_t g_cpu_contexts[NUM_CPU_CORES] = {0};
 
 void set_core_entrypoint_and_context_id(uint32_t core, uint64_t entrypoint_addr, uint64_t context_id) {
     g_cpu_contexts[core].ELR_EL3 = entrypoint_addr;
diff --git a/exosphere/src/interrupt.c b/exosphere/src/interrupt.c
index fd4d1df0a..52f42250c 100644
--- a/exosphere/src/interrupt.c
+++ b/exosphere/src/interrupt.c
@@ -5,7 +5,7 @@
 #include "interrupt.h"
 
 /* Global of registered handlers. */
-struct {
+static struct {
     unsigned int id;
     void (*handler)(void);
 } g_registered_interrupts[MAX_REGISTERED_INTERRUPTS] = { {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL} };
diff --git a/exosphere/src/masterkey.c b/exosphere/src/masterkey.c
index 5288b9405..0b787c2bf 100644
--- a/exosphere/src/masterkey.c
+++ b/exosphere/src/masterkey.c
@@ -5,15 +5,15 @@
 #include "masterkey.h"
 #include "se.h"
 
-unsigned int g_mkey_revision = 0;
-bool g_determined_mkey_revision = false;
+static unsigned int g_mkey_revision = 0;
+static bool g_determined_mkey_revision = false;
 
-uint8_t g_old_masterkeys[MASTERKEY_REVISION_MAX][0x10];
+static uint8_t g_old_masterkeys[MASTERKEY_REVISION_MAX][0x10];
 
 /* TODO: Dev keys. */
 
 /* TODO: Extend with new vectors, as needed. */
-const uint8_t mkey_vectors[MASTERKEY_REVISION_MAX][0x10] =
+static const uint8_t mkey_vectors[MASTERKEY_REVISION_MAX][0x10] =
 {
     {0x0C, 0xF0, 0x59, 0xAC, 0x85, 0xF6, 0x26, 0x65, 0xE1, 0xE9, 0x19, 0x55, 0xE6, 0xF2, 0x67, 0x3D}, /* Zeroes encrypted with Master Key 00. */
     {0x29, 0x4C, 0x04, 0xC8, 0xEB, 0x10, 0xED, 0x9D, 0x51, 0x64, 0x97, 0xFB, 0xF3, 0x4D, 0x50, 0xDD}, /* Master key 00 encrypted with Master key 01. */
diff --git a/exosphere/src/se.c b/exosphere/src/se.c
index 78c85ff4d..e828e54a7 100644
--- a/exosphere/src/se.c
+++ b/exosphere/src/se.c
@@ -14,10 +14,10 @@ void trigger_se_rsa_op(void *buf, size_t size);
 void trigger_se_blocking_op(unsigned int op, void *dst, size_t dst_size, const void *src, size_t src_size);
 
 /* Globals for driver. */
-unsigned int (*g_se_callback)(void);
+static unsigned int (*g_se_callback)(void);
 
-unsigned int g_se_modulus_sizes[KEYSLOT_RSA_MAX];
-unsigned int g_se_exp_sizes[KEYSLOT_RSA_MAX];
+static unsigned int g_se_modulus_sizes[KEYSLOT_RSA_MAX];
+static unsigned int g_se_exp_sizes[KEYSLOT_RSA_MAX];
 
 
 /* Initialize a SE linked list. */
diff --git a/exosphere/src/sealedkeys.c b/exosphere/src/sealedkeys.c
index 450915c0e..b71a4fe44 100644
--- a/exosphere/src/sealedkeys.c
+++ b/exosphere/src/sealedkeys.c
@@ -4,12 +4,11 @@
 #include "sealedkeys.h"
 #include "se.h"
 
-const uint8_t g_titlekey_seal_key_source[0x10] = {
+static const uint8_t g_titlekey_seal_key_source[0x10] = {
     0xCB, 0xB7, 0x6E, 0x38, 0xA1, 0xCB, 0x77, 0x0F, 0xB2, 0xA5, 0xB2, 0x9D, 0xD8, 0x56, 0x9F, 0x76
 };
 
-
-const uint8_t g_seal_key_sources[CRYPTOUSECASE_MAX][0x10] = {
+static const uint8_t g_seal_key_sources[CRYPTOUSECASE_MAX][0x10] = {
     {0xF4, 0x0C, 0x16, 0x26, 0x0D, 0x46, 0x3B, 0xE0, 0x8C, 0x6A, 0x56, 0xE5, 0x82, 0xD4, 0x1B, 0xF6},
     {0x7F, 0x54, 0x2C, 0x98, 0x1E, 0x54, 0x18, 0x3B, 0xBA, 0x63, 0xBD, 0x4C, 0x13, 0x5B, 0xF1, 0x06},
     {0xC7, 0x3F, 0x73, 0x60, 0xB7, 0xB9, 0x9D, 0x74, 0x0A, 0xF8, 0x35, 0x60, 0x1A, 0x18, 0x74, 0x63},
diff --git a/exosphere/src/smc_api.c b/exosphere/src/smc_api.c
index b5ff36168..7be80b6c3 100644
--- a/exosphere/src/smc_api.c
+++ b/exosphere/src/smc_api.c
@@ -62,7 +62,7 @@ typedef struct {
     uint32_t num_handlers;
 } smc_table_t;
 
-smc_table_entry_t g_smc_user_table[SMC_USER_HANDLERS] = {
+static smc_table_entry_t g_smc_user_table[SMC_USER_HANDLERS] = {
     {0, NULL},
     {0xC3000401, smc_set_config},
     {0xC3000002, smc_get_config},
@@ -84,7 +84,7 @@ smc_table_entry_t g_smc_user_table[SMC_USER_HANDLERS] = {
     {0xC3000012, smc_unwrap_aes_wrapped_titlekey}
 };
 
-smc_table_entry_t g_smc_priv_table[SMC_PRIV_HANDLERS] = {
+static smc_table_entry_t g_smc_priv_table[SMC_PRIV_HANDLERS] = {
     {0, NULL},
     {0xC4000001, smc_cpu_suspend},
     {0x84000002, smc_cpu_off},
@@ -96,7 +96,7 @@ smc_table_entry_t g_smc_priv_table[SMC_PRIV_HANDLERS] = {
     {0xC3000008, smc_read_write_register}
 };
 
-smc_table_t g_smc_tables[2] = {
+static smc_table_t g_smc_tables[2] = {
     { /* SMC_HANDLER_USER */
         g_smc_user_table,
         SMC_USER_HANDLERS
diff --git a/exosphere/src/titlekey.c b/exosphere/src/titlekey.c
index a55bd21fa..845aceed3 100644
--- a/exosphere/src/titlekey.c
+++ b/exosphere/src/titlekey.c
@@ -8,8 +8,8 @@
 #include "masterkey.h"
 #include "se.h"
 
-uint64_t g_tkey_expected_label_hash[4];
-unsigned int g_tkey_master_key_rev = MASTERKEY_REVISION_MAX;
+static uint64_t g_tkey_expected_label_hash[4];
+static unsigned int g_tkey_master_key_rev = MASTERKEY_REVISION_MAX;
 
 /* Set the expected db prefix. */
 void tkey_set_expected_label_hash(uint64_t *label_hash) {