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-rw-r--r--src/drivers/pc80/vga/vga.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/drivers/pc80/vga/vga.c b/src/drivers/pc80/vga/vga.c
index 9961e3f59d..3471c944a1 100644
--- a/src/drivers/pc80/vga/vga.c
+++ b/src/drivers/pc80/vga/vga.c
@@ -262,6 +262,9 @@ vga_frame_set(unsigned int line, unsigned int character)
void
vga_line_write(unsigned int line, const char *string)
{
+ if (!string)
+ return;
+
unsigned short *p = (unsigned short *)VGA_FB + (VGA_COLUMNS * line);
size_t i, len = strlen(string);