diff --git a/src/decimal.rs b/src/decimal.rs
index e88dda43..944ddbc9 100644
--- a/src/decimal.rs
+++ b/src/decimal.rs
@@ -914,7 +914,7 @@ impl Decimal {
         // floating point number
         if is64 {
             // Guaranteed to about 16 dp
-            while exponent10 < 0 && (bits[2] != 0 || (bits[1] & 0xFFE0_0000) != 0) {
+            while exponent10 < 0 && (bits[2] != 0 || (bits[1] & 0xFFF0_0000) != 0) {
                 let rem10 = div_by_u32(bits, 10);
                 exponent10 += 1;
                 if rem10 >= 5 {
diff --git a/tests/decimal_tests.rs b/tests/decimal_tests.rs
index 87b24fed..8e16e670 100644
--- a/tests/decimal_tests.rs
+++ b/tests/decimal_tests.rs
@@ -1142,6 +1142,9 @@ fn it_converts_from_f64() {
         from_f64(0.12345678901234567890123456789f64).unwrap().to_string()
     );
     assert_eq!("0", from_f64(0.00000000000000000000000000001f64).unwrap().to_string());
+    assert_eq!("0.6927", from_f64(0.6927f64).unwrap().to_string());
+    assert_eq!("0.00006927", from_f64(0.00006927f64).unwrap().to_string());
+    assert_eq!("0.000000006927", from_f64(0.000000006927f64).unwrap().to_string());
 
     assert!(from_f64(std::f64::NAN).is_none());
     assert!(from_f64(std::f64::INFINITY).is_none());