diff --git a/target/mips/internal.h b/target/mips/internal.h
index 558cdca4e8..c175170073 100644
--- a/target/mips/internal.h
+++ b/target/mips/internal.h
@@ -152,12 +152,6 @@ struct CPUMIPSTLBContext {
     } mmu;
 };
 
-int no_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
-                       target_ulong address, MMUAccessType access_type);
-int fixed_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
-                          target_ulong address, MMUAccessType access_type);
-int r4k_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
-                    target_ulong address, MMUAccessType access_type);
 void r4k_helper_tlbwi(CPUMIPSState *env);
 void r4k_helper_tlbwr(CPUMIPSState *env);
 void r4k_helper_tlbp(CPUMIPSState *env);
diff --git a/target/mips/tcg/sysemu/tlb_helper.c b/target/mips/tcg/sysemu/tlb_helper.c
index bf242f5e65..a45146a2b2 100644
--- a/target/mips/tcg/sysemu/tlb_helper.c
+++ b/target/mips/tcg/sysemu/tlb_helper.c
@@ -26,8 +26,8 @@
 #include "hw/mips/cpudevs.h"
 
 /* no MMU emulation */
-int no_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
-                       target_ulong address, MMUAccessType access_type)
+static int no_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
+                              target_ulong address, MMUAccessType access_type)
 {
     *physical = address;
     *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
@@ -35,8 +35,9 @@ int no_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
 }
 
 /* fixed mapping MMU emulation */
-int fixed_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
-                          target_ulong address, MMUAccessType access_type)
+static int fixed_mmu_map_address(CPUMIPSState *env, hwaddr *physical,
+                                 int *prot, target_ulong address,
+                                 MMUAccessType access_type)
 {
     if (address <= (int32_t)0x7FFFFFFFUL) {
         if (!(env->CP0_Status & (1 << CP0St_ERL))) {
@@ -55,8 +56,8 @@ int fixed_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
 }
 
 /* MIPS32/MIPS64 R4000-style MMU emulation */
-int r4k_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
-                    target_ulong address, MMUAccessType access_type)
+static int r4k_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
+                           target_ulong address, MMUAccessType access_type)
 {
     uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
     uint32_t MMID = env->CP0_MemoryMapID;