diff --git a/librz/hash/sha2.c b/librz/hash/sha2.c
index 36a81bec6e..23aa78f82e 100644
--- a/librz/hash/sha2.c
+++ b/librz/hash/sha2.c
@@ -375,9 +375,6 @@ void SHA256_Transform(RZ_SHA256_CTX *context, const ut32 *data) {
 	context->state[5] += f;
 	context->state[6] += g;
 	context->state[7] += h;
-
-	/* Clean up */
-	a = b = c = d = e = f = g = h = T1 = 0;
 }
 
 #else /* SHA2_UNROLL_TRANSFORM */
@@ -455,9 +452,6 @@ void SHA256_Transform(RZ_SHA256_CTX *context, const ut32 *data) {
 	context->state[5] += f;
 	context->state[6] += g;
 	context->state[7] += h;
-
-	/* Clean up */
-	a = b = c = d = e = f = g = h = T1 = T2 = 0;
 }
 
 #endif /* SHA2_UNROLL_TRANSFORM */
@@ -486,8 +480,6 @@ void SHA256_Update(RZ_SHA256_CTX *context, const ut8 *data, size_t len) {
 			/* The buffer is not yet full */
 			memcpy(&context->buffer[usedspace], data, len);
 			context->bitcount += len << 3;
-			/* Clean up: */
-			usedspace = freespace = 0;
 			return;
 		}
 	}
@@ -503,8 +495,6 @@ void SHA256_Update(RZ_SHA256_CTX *context, const ut8 *data, size_t len) {
 		memcpy(context->buffer, data, len);
 		context->bitcount += len << 3;
 	}
-	/* Clean up: */
-	usedspace = freespace = 0;
 }
 
 void SHA256_Final(ut8 *digest, RZ_SHA256_CTX *context) {
@@ -576,7 +566,6 @@ void SHA256_Final(ut8 *digest, RZ_SHA256_CTX *context) {
 
 	/* Clean up state data: */
 	rz_mem_memzero(context, sizeof(*context));
-	usedspace = 0;
 }
 
 char *SHA256_End(RZ_SHA256_CTX *context, char buffer[]) {
@@ -703,9 +692,6 @@ void SHA512_Transform(RZ_SHA512_CTX *context, const ut64 *data) {
 	context->state[5] += f;
 	context->state[6] += g;
 	context->state[7] += h;
-
-	/* Clean up */
-	a = b = c = d = e = f = g = h = T1 = 0;
 }
 
 #else /* SHA2_UNROLL_TRANSFORM */
@@ -781,9 +767,6 @@ void SHA512_Transform(RZ_SHA512_CTX *context, const ut64 *data) {
 	context->state[5] += f;
 	context->state[6] += g;
 	context->state[7] += h;
-
-	/* Clean up */
-	a = b = c = d = e = f = g = h = T1 = T2 = 0;
 }
 
 #endif /* SHA2_UNROLL_TRANSFORM */
@@ -817,8 +800,6 @@ void SHA512_Update(RZ_SHA512_CTX *context, const ut8 *data, size_t len) {
 			/* The buffer is not yet full */
 			memcpy(&context->buffer[usedspace], data, len);
 			ADDINC128(context->bitcount, len << 3);
-			/* Clean up: */
-			usedspace = freespace = 0;
 			return;
 		}
 	}
@@ -834,8 +815,6 @@ void SHA512_Update(RZ_SHA512_CTX *context, const ut8 *data, size_t len) {
 		memcpy(context->buffer, data, len);
 		ADDINC128(context->bitcount, len << 3);
 	}
-	/* Clean up: */
-	usedspace = freespace = 0;
 }
 
 void SHA512_Last(RZ_SHA512_CTX *context) {