diff --git a/ubb-patgen/ubb-patgen.c b/ubb-patgen/ubb-patgen.c
index 260d324..69edee4 100644
--- a/ubb-patgen/ubb-patgen.c
+++ b/ubb-patgen/ubb-patgen.c
@@ -92,17 +92,21 @@ static void print_freq(FILE *file, double f)
 }
 
 
-static void show_frequencies(void)
+static void show_frequencies(int quiet)
 {
 	const struct mmcclk *clks;
 	int n, i;
 
 	clks = frequencies(&n);
 	for (i = 0; i != n; i++) {
-		printf("clkdiv = %u, clkrt = %u, bus_clk = ",
-		    clks[i].clkdiv, clks[i].clkrt);
-		print_freq(stdout, clks[i].bus_clk_hz);
-		putchar('\n');
+		if (quiet) {
+			printf("%f\n", clks[i].bus_clk_hz);
+		} else {
+			printf("clkdiv = %u, clkrt = %u, bus_clk = ",
+			    clks[i].clkdiv, clks[i].clkrt);
+			print_freq(stdout, clks[i].bus_clk_hz);
+			putchar('\n');
+		}
 	}
 	free((void *) clks);
 }
@@ -443,13 +447,14 @@ static void usage(const char *name)
 {
         fprintf(stderr,
 "usage: %s\n"
-"       %s -f freq_hz\n"
-"       %s [-f freq_hz] [-q] -c [active_s]\n"
-"       %s [-f freq_hz] [-q] [-C] pattern\n\n"
+"       %s [-q] -f freq_hz\n"
+"       %s [-q] [-f freq_hz] -c [active_s]\n"
+"       %s [-q] [-f freq_hz] [-C] pattern\n\n"
 "  -c          output bus clock on CLK without sending a pattern\n"
 "  -C          temporarily output bus clock on CLK (for debugging)\n"
 "  -f freq_hz  set bus clock to the specified frequency (default: 1 MHz)\n"
-"  -q          quiet. Don't report clock differences.\n\n"
+"  -q          quiet. Don't pretty-print frequencies; don't report clock\n"
+"              differences.\n\n"
 "  active_s    keep running that many seconds after setting the clock\n"
 "              (default: exit immediately but leave the clock on)\n"
 "  pattern     send the specified pattern on DAT0 through DAT3\n\n"
@@ -502,7 +507,7 @@ int main(int argc, char **argv)
 	case 0:
 		if (clk_only)
 			break;
-		if (clkout || quiet)
+		if (clkout)
 			usage(*argv);
 
 		ubb_open(UBB_ALL);
@@ -514,7 +519,7 @@ int main(int argc, char **argv)
 			}
 			printf("%f\n", clk.bus_clk_hz);
 		} else {
-			show_frequencies();
+			show_frequencies(quiet);
 		}
 		return 0;
 	case 1: