diff --git a/action_test.go b/action_test.go
index 3ff3e71..426d80d 100644
--- a/action_test.go
+++ b/action_test.go
@@ -185,7 +185,7 @@ func writeQueryToPrompt(t *testing.T, message string) {
 				t.Logf("End of string reached")
 				break
 			}
-			t.Errorf("Failed to decode run in string: %s", r)
+			t.Errorf("Failed to decode run in string: %#U", r)
 			return
 		}
 
diff --git a/config_test.go b/config_test.go
index 844e6ec..97f61bc 100644
--- a/config_test.go
+++ b/config_test.go
@@ -32,7 +32,7 @@ func TestReadRC(t *testing.T) {
 	if err := json.Unmarshal([]byte(txt), cfg); err != nil {
 		t.Fatalf("Error unmarshaling json: %s", err)
 	}
-	t.Logf("%#q", cfg)
+	t.Logf("%#v", cfg)
 }
 
 type stringsToStyleTest struct {
diff --git a/layout_test.go b/layout_test.go
index 8d64d40..0037624 100644
--- a/layout_test.go
+++ b/layout_test.go
@@ -58,7 +58,7 @@ func TestLayoutType(t *testing.T) {
 	for _, l := range layouts {
 		valid := IsValidLayoutType(l.value)
 		if valid != l.expectOK {
-			t.Errorf("LayoutType %s, expected IsValidLayoutType to return %s, but got %s",
+			t.Errorf("LayoutType %s, expected IsValidLayoutType to return %t, but got %t",
 				l.value,
 				l.expectOK,
 				valid,
@@ -74,7 +74,7 @@ func TestPrintScreen(t *testing.T) {
 	makeVerifier := func(initX, initY int, fill bool) func(string) {
 		return func(msg string) {
 			i.reset()
-			t.Logf("Checking printScreen(%d, %d, %s, %s)", initX, initY, msg, fill)
+			t.Logf("Checking printScreen(%d, %d, %s, %t)", initX, initY, msg, fill)
 			width := utf8.RuneCountInString(msg)
 			printScreen(initX, initY, termbox.ColorDefault, termbox.ColorDefault, msg, fill)
 			events := i.events["SetCell"]
diff --git a/view_test.go b/view_test.go
index 2cd7e61..2c0daed 100644
--- a/view_test.go
+++ b/view_test.go
@@ -23,20 +23,20 @@ func TestMergeAttribute(t *testing.T) {
 
 	for _, c := range tests {
 		if m := mergeAttribute(colors[c[0]], colors[c[1]]); m != colors[c[2]] {
-			t.Errorf("(%s + %s) expected %s, got %s", c[0], c[1], colors[c[2]], m)
+			t.Errorf("(%s + %s) expected %d(%s), got %d", c[0], c[1], colors[c[2]], c[2], m)
 		}
 	}
 
 	// merge with white
 	for _, c := range colors {
 		if m := mergeAttribute(c, colors["white"]); m != colors["white"] {
-			t.Errorf("expected white(%s), got %s", colors["white"], m)
+			t.Errorf("expected white(%d), got %d", colors["white"], m)
 		}
 	}
 
 	// merge attributes
 	if m := mergeAttribute(termbox.AttrBold|colors["red"], termbox.AttrUnderline|colors["cyan"]); m != termbox.AttrBold|termbox.AttrUnderline|colors["white"] {
-		t.Errorf("expected %s, got %s", termbox.AttrBold|termbox.AttrUnderline|colors["white"], m)
+		t.Errorf("expected %d, got %d", termbox.AttrBold|termbox.AttrUnderline|colors["white"], m)
 	}
 
 }