diff --git a/cpukit/libdebugger/rtems-debugger-microblaze.c b/cpukit/libdebugger/rtems-debugger-microblaze.c
index 71b11dd9f6..e84d19ed1d 100644
--- a/cpukit/libdebugger/rtems-debugger-microblaze.c
+++ b/cpukit/libdebugger/rtems-debugger-microblaze.c
@@ -391,6 +391,8 @@ static void target_printk( const char *format, ... )
 
 static int microblaze_debug_probe( rtems_debugger_target *target )
 {
+  (void) target;
+
   uint32_t    msr;
   uint32_t    pvr0;
   uint32_t    pvr3;
@@ -482,6 +484,8 @@ int rtems_debugger_target_configure( rtems_debugger_target *target )
 
 static void target_print_frame( CPU_Exception_frame *frame )
 {
+  (void) frame;
+
   EXC_FRAME_PRINT( target_printk, "[} ", frame );
 }
 
@@ -602,6 +606,8 @@ static bool tid_is_excluded( const rtems_id tid )
 
 static void mb_thread_switch( Thread_Control *executing, Thread_Control *heir )
 {
+  (void) executing;
+
   if ( tid_is_excluded( heir->Object.id ) == true ) {
     rtems_debugger_target_swbreak_remove();
     return;
@@ -1374,6 +1380,11 @@ int rtems_debugger_target_hwbreak_control(
   DB_UINT                          kind
 )
 {
+  (void) wp;
+  (void) insert;
+  (void) addr;
+  (void) kind;
+
   return 0;
 }
 
diff --git a/cpukit/libdl/rtl-mdreloc-microblaze.c b/cpukit/libdl/rtl-mdreloc-microblaze.c
index 0956e22bc7..9ff920f5c7 100644
--- a/cpukit/libdl/rtl-mdreloc-microblaze.c
+++ b/cpukit/libdl/rtl-mdreloc-microblaze.c
@@ -135,6 +135,9 @@ rtems_rtl_elf_reloc_rela (rtems_rtl_obj*            obj,
                           const Elf_Byte            syminfo,
                           const Elf_Word            symvalue,
                           const bool                parsing) {
+  (void) symname;
+  (void) syminfo;
+
   Elf_Word *where;
   Elf_Word addend = (Elf_Word)rela->r_addend;
   Elf_Addr target;
@@ -276,6 +279,14 @@ rtems_rtl_elf_relocate_rel (rtems_rtl_obj*            obj,
                             const char*               symname,
                             const Elf_Byte            syminfo,
                             const Elf_Word            symvalue) {
+
+  (void) obj;
+  (void) rel;
+  (void) sect;
+  (void) symname;
+  (void) syminfo;
+  (void) symvalue;
+
   rtems_rtl_set_error (EINVAL, "rel type record not supported");
   return rtems_rtl_elf_rel_failure;
 }
diff --git a/cpukit/score/cpu/microblaze/cpu.c b/cpukit/score/cpu/microblaze/cpu.c
index 823825d2b1..f733077f4d 100644
--- a/cpukit/score/cpu/microblaze/cpu.c
+++ b/cpukit/score/cpu/microblaze/cpu.c
@@ -60,6 +60,9 @@ void _CPU_Context_Initialize(
   void *tls_area
 )
 {
+  (void) new_level;
+  (void) is_fp;
+
   uint32_t stack = (uint32_t) stack_area_begin;
   uint32_t stack_high = stack + stack_area_size;
 
@@ -173,6 +176,8 @@ void _CPU_ISR_install_vector(
 
 void *_CPU_Thread_Idle_body( uintptr_t ignored )
 {
+  (void) ignored;
+
   while ( true ) {
   }
 }