diff --git a/include/display_options.h b/include/display_options.h
index a0dabca2b8..049688e39e 100644
--- a/include/display_options.h
+++ b/include/display_options.h
@@ -24,7 +24,7 @@ void print_size(uint64_t size, const char *suffix);
 /**
  * print_freq() - Print a frequency with a suffix
  *
- * Print frequencies as "x.xx GHz", "xxx KHz", etc as needed; allow for
+ * Print frequencies as "x.xx GHz", "xxx kHz", etc as needed; allow for
  * optional trailing string (like "\n")
  *
  * @freq:	Frequency to print in Hz
diff --git a/lib/display_options.c b/lib/display_options.c
index ea9977cc18..b2025eeb5c 100644
--- a/lib/display_options.c
+++ b/lib/display_options.c
@@ -54,7 +54,7 @@ void print_freq(uint64_t freq, const char *s)
 {
 	unsigned long m = 0;
 	uint32_t f;
-	static const char names[] = {'G', 'M', 'K'};
+	static const char names[] = {'G', 'M', 'k'};
 	unsigned long d = 1e9;
 	char c = 0;
 	unsigned int i;