diff --git a/bool_test.go b/bool_test.go
index eb9cb01..80e2714 100644
--- a/bool_test.go
+++ b/bool_test.go
@@ -124,7 +124,7 @@ func TestBoolPointer(t *testing.T) {
 	b := BoolFrom(true)
 	ptr := b.Ptr()
 	if *ptr != true {
-		t.Errorf("bad %s bool: %#v ≠ %s\n", "pointer", ptr, true)
+		t.Errorf("bad %s bool: %#v ≠ %v\n", "pointer", ptr, true)
 	}
 
 	null := NewBool(false, false)
diff --git a/float_test.go b/float_test.go
index a4ba3a4..f01f4c6 100644
--- a/float_test.go
+++ b/float_test.go
@@ -101,7 +101,7 @@ func TestFloatPointer(t *testing.T) {
 	f := FloatFrom(1.2345)
 	ptr := f.Ptr()
 	if *ptr != 1.2345 {
-		t.Errorf("bad %s float: %#v ≠ %s\n", "pointer", ptr, 1.2345)
+		t.Errorf("bad %s float: %#v ≠ %v\n", "pointer", ptr, 1.2345)
 	}
 
 	null := NewFloat(0, false)
diff --git a/int_test.go b/int_test.go
index bce5516..683b6c8 100644
--- a/int_test.go
+++ b/int_test.go
@@ -127,7 +127,7 @@ func TestIntPointer(t *testing.T) {
 	i := IntFrom(12345)
 	ptr := i.Ptr()
 	if *ptr != 12345 {
-		t.Errorf("bad %s int: %#v ≠ %s\n", "pointer", ptr, 12345)
+		t.Errorf("bad %s int: %#v ≠ %d\n", "pointer", ptr, 12345)
 	}
 
 	null := NewInt(0, false)
diff --git a/zero/bool_test.go b/zero/bool_test.go
index 28f508c..40e544b 100644
--- a/zero/bool_test.go
+++ b/zero/bool_test.go
@@ -120,7 +120,7 @@ func TestBoolPointer(t *testing.T) {
 	b := BoolFrom(true)
 	ptr := b.Ptr()
 	if *ptr != true {
-		t.Errorf("bad %s bool: %#v ≠ %s\n", "pointer", ptr, true)
+		t.Errorf("bad %s bool: %#v ≠ %v\n", "pointer", ptr, true)
 	}
 
 	null := NewBool(false, false)
@@ -168,7 +168,7 @@ func TestBoolScan(t *testing.T) {
 
 func assertBool(t *testing.T, b Bool, from string) {
 	if b.Bool != true {
-		t.Errorf("bad %s bool: %d ≠ %d\n", from, b.Bool, true)
+		t.Errorf("bad %s bool: %d ≠ %v\n", from, b.Bool, true)
 	}
 	if !b.Valid {
 		t.Error(from, "is invalid, but should be valid")
diff --git a/zero/float_test.go b/zero/float_test.go
index d3d44f6..c6cf814 100644
--- a/zero/float_test.go
+++ b/zero/float_test.go
@@ -111,7 +111,7 @@ func TestFloatPointer(t *testing.T) {
 	f := FloatFrom(1.2345)
 	ptr := f.Ptr()
 	if *ptr != 1.2345 {
-		t.Errorf("bad %s Float: %#v ≠ %s\n", "pointer", ptr, 1.2345)
+		t.Errorf("bad %s Float: %#v ≠ %v\n", "pointer", ptr, 1.2345)
 	}
 
 	null := NewFloat(0, false)
diff --git a/zero/int_test.go b/zero/int_test.go
index 6455334..9b6067c 100644
--- a/zero/int_test.go
+++ b/zero/int_test.go
@@ -138,7 +138,7 @@ func TestIntPointer(t *testing.T) {
 	i := IntFrom(12345)
 	ptr := i.Ptr()
 	if *ptr != 12345 {
-		t.Errorf("bad %s int: %#v ≠ %s\n", "pointer", ptr, 12345)
+		t.Errorf("bad %s int: %#v ≠ %d\n", "pointer", ptr, 12345)
 	}
 
 	null := NewInt(0, false)