diff --git a/bsps/sparc/erc32/console/erc32_console.c b/bsps/sparc/erc32/console/erc32_console.c
index 7aeb739677..01c5c70afb 100644
--- a/bsps/sparc/erc32/console/erc32_console.c
+++ b/bsps/sparc/erc32/console/erc32_console.c
@@ -292,7 +292,7 @@ static ssize_t erc32_console_write_support_polled(
   size_t      len
 )
 {
-  int nwrite = 0;
+  size_t nwrite = 0;
 
   while (nwrite < len) {
     console_outbyte_polled( minor, *buf++ );
diff --git a/bsps/sparc/leon2/console/console.c b/bsps/sparc/leon2/console/console.c
index 56298504ee..d4492e070c 100644
--- a/bsps/sparc/leon2/console/console.c
+++ b/bsps/sparc/leon2/console/console.c
@@ -283,7 +283,7 @@ void console_outbyte_interrupt(
 
 static ssize_t console_write_support (int minor, const char *buf, size_t len)
 {
-  int nwrite = 0;
+  size_t nwrite = 0;
 
   while (nwrite < len) {
 #if (CONSOLE_USE_INTERRUPTS)