diff --git a/src/algorithms/rsa.rs b/src/algorithms/rsa.rs
index 0f4325aa..b4ece553 100644
--- a/src/algorithms/rsa.rs
+++ b/src/algorithms/rsa.rs
@@ -98,10 +98,11 @@ pub fn rsa_decrypt<R: CryptoRngCore + ?Sized>(
         m.0
     };
 
+    // Ensure output precision matches input precision
+    let m = m.shorten(n_params.bits_precision());
     match ir {
         Some(ref ir) => {
             // unblind
-            let m = m.shorten(n_params.bits_precision());
             let res = unblind(&m, ir, n_params);
             Ok(res)
         }
diff --git a/tests/proptests.proptest-regressions b/tests/proptests.proptest-regressions
new file mode 100644
index 00000000..145a36aa
--- /dev/null
+++ b/tests/proptests.proptest-regressions
@@ -0,0 +1,7 @@
+# Seeds for failure cases proptest has generated in the past. It is
+# automatically read and these particular cases re-run before any
+# novel cases are generated.
+#
+# It is recommended to check this file in to source control so that
+# everyone who runs the test benefits from these saved cases.
+cc 6eb8993a76d99005d1cb0f3d848d5390c3e0f4f2de4a7517eccfb477f74e13a0 # shrinks to private_key = RsaPrivateKey { pubkey_components: RsaPublicKey { n: NonZero(BoxedUint(0x8347C96BF9CDBB267650CB931400D5091139DB988E11C5AAF9EAC86BA5D4EA3EEBA0569077555B3FA4CE0D41300461BF8926A34B7993A48B1F3F69CAB3158DFB)), e: 65537, n_params: BoxedMontyParams { modulus: Odd(BoxedUint(0x8347C96BF9CDBB267650CB931400D5091139DB988E11C5AAF9EAC86BA5D4EA3EEBA0569077555B3FA4CE0D41300461BF8926A34B7993A48B1F3F69CAB3158DFB)), one: BoxedUint(0x7CB83694063244D989AF346CEBFF2AF6EEC6246771EE3A55061537945A2B15C1145FA96F88AAA4C05B31F2BECFFB9E4076D95CB4866C5B74E0C096354CEA7205), r2: BoxedUint(0x70E018F6DD63DB9D8182776C303A6B688E9D44CEE054FF801E11E9DEA040862E9E8EC3E4CC0FF3B0D573D09C381621AB35B7C6CDC49098E583F643AAC2238D65), r3: BoxedUint(0x1ADF6E5E9A880615C0CC586BB70BA0D657CF3F1624A68671A192471E75F4CD56A401C11B483909871F0FA8554275EA17ABA04BE17F88AF9B749F44D591277079), mod_neg_inv: Limb(0xD0EBDD5E695C8ACD) } }, d: BoxedUint(0x00000000000000000000000000000000000000000000000000000000000000002F08B129763E3726F88CC9E2CFEFDC637B40776498C1D5480472118C3FC5A08694CCAE7DCBFD25B7850C79332F5F100111BEED9DC0A7B8D8C37EB657E4985081), primes: [BoxedUint(0x981BE188EF711A1E2C840EC3CE9A7F3B7F5BB8E81F09A5A13E00EF2F895F4213), BoxedUint(0xDCF20F8FD566A26BC0FD581259F9A2AABF0ADB6C01F2A5ADD2AEFA0DEAA5C179)], precomputed: Some(PrecomputedValues { dp: BoxedUint(0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000053084D3A51F2BC9E2210C87A8CCA7B8FBFFB12D9EB2F79F1A6061E8B2583116F), dq: BoxedUint(0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007056BB46DCB044A1190D373C8D76FA186AEE7046686F218251FF19B0FDBFADB1), qinv: BoxedMontyForm { montgomery_form: BoxedUint(0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000682511332F037EAFDE67A19620CFDC9961A7FF261F4F185D49E5EF21E2686753), params: BoxedMontyParams { modulus: Odd(BoxedUint(0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000981BE188EF711A1E2C840EC3CE9A7F3B7F5BB8E81F09A5A13E00EF2F895F4213)), one: BoxedUint(0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006BB5F6A9EDD4349E0EF3418B86FD1D88DAF170653B6F050CAD2062140743E1EE), r2: BoxedUint(0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003C67CD14A702D9D3E7D7790AE0DB96B7E2DA351552A50382262CF0D0BB51E17D), r3: BoxedUint(0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001C83D6B4CE99FAFBB23D7586BA520C62B5206D43755A767BEBB5764A015BF27D), mod_neg_inv: Limb(0xC61D8CFC698327E5) } }, p_params: BoxedMontyParams { modulus: Odd(BoxedUint(0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000981BE188EF711A1E2C840EC3CE9A7F3B7F5BB8E81F09A5A13E00EF2F895F4213)), one: BoxedUint(0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006BB5F6A9EDD4349E0EF3418B86FD1D88DAF170653B6F050CAD2062140743E1EE), r2: BoxedUint(0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003C67CD14A702D9D3E7D7790AE0DB96B7E2DA351552A50382262CF0D0BB51E17D), r3: BoxedUint(0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001C83D6B4CE99FAFBB23D7586BA520C62B5206D43755A767BEBB5764A015BF27D), mod_neg_inv: Limb(0xC61D8CFC698327E5) }, q_params: BoxedMontyParams { modulus: Odd(BoxedUint(0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000DCF20F8FD566A26BC0FD581259F9A2AABF0ADB6C01F2A5ADD2AEFA0DEAA5C179)), one: BoxedUint(0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007FFB34771D54239EC9DEDC1D2108D7D70D73B05E764B8E38EEE1014C49C29BF5), r2: BoxedUint(0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000A29B3272D65244B833205BCB2F0670190F04A5C945B416487C3F470C9A6126F6), r3: BoxedUint(0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000033E334261962415DBDE417A3E2844C84E5252176396B638A3873E3B5A75352DE), mod_neg_inv: Limb(0x6092436DE4BA2737) } }) }, msg = []