diff --git a/fips/cmac/fips_cmac_selftest.c b/fips/cmac/fips_cmac_selftest.c
index 8833d97227..70764dd7a1 100644
--- a/fips/cmac/fips_cmac_selftest.c
+++ b/fips/cmac/fips_cmac_selftest.c
@@ -115,7 +115,7 @@ int FIPS_selftest_cmac()
 	const EVP_CIPHER *cipher;
 	CMAC_CTX *ctx = CMAC_CTX_new();
 	const CMAC_KAT *t;
-	int subid, rv = 1;
+	int subid = -1, rv = 1;
 
 	for(n=0,t=vector; n<sizeof(vector)/sizeof(vector[0]); n++,t++)
 		{
diff --git a/fips/hmac/fips_hmac_selftest.c b/fips/hmac/fips_hmac_selftest.c
index 5b513c991a..037761ce9f 100644
--- a/fips/hmac/fips_hmac_selftest.c
+++ b/fips/hmac/fips_hmac_selftest.c
@@ -120,7 +120,7 @@ int FIPS_selftest_hmac()
 	unsigned char   out[EVP_MAX_MD_SIZE];
 	const EVP_MD   *md;
 	const HMAC_KAT *t;
-	int rv = 1, subid;
+	int rv = 1, subid = -1;
 	HMAC_CTX c;
 	HMAC_CTX_init(&c);
 
diff --git a/fips/rand/fips_drbg_lib.c b/fips/rand/fips_drbg_lib.c
index b5aed0177e..95c73e191d 100644
--- a/fips/rand/fips_drbg_lib.c
+++ b/fips/rand/fips_drbg_lib.c
@@ -274,7 +274,7 @@ static int drbg_reseed(DRBG_CTX *dctx,
 			const unsigned char *adin, size_t adinlen, int hcheck)
 	{
 	unsigned char *entropy = NULL;
-	size_t entlen;
+	size_t entlen = 0;
 	int r = 0;
 
 #if 0