diff --git a/libfreerdp/common/assistance.c b/libfreerdp/common/assistance.c
index f556f1b0b..4ddd12024 100644
--- a/libfreerdp/common/assistance.c
+++ b/libfreerdp/common/assistance.c
@@ -814,14 +814,19 @@ char* freerdp_assistance_construct_expert_blob(const char* name, const char* pas
 
 char* freerdp_assistance_generate_pass_stub(WINPR_ATTR_UNUSED DWORD flags)
 {
-	UINT32 nums[14];
-	char* passStub = NULL;
-	char set1[64] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789*_";
-	char set2[12] = "!@#$&^*()-+=";
-	char set3[10] = "0123456789";
-	char set4[26] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
-	char set5[26] = "abcdefghijklmnopqrstuvwxyz";
-	passStub = (char*)malloc(15);
+	UINT32 nums[14] = { 0 };
+	const char set1[64] = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
+		                    'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+		                    'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
+		                    'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+		                    '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '*', '_' };
+	const char set2[12] = { '!', '@', '#', '$', '&', '^', '*', '(', ')', '-', '+', '=' };
+	const char set3[10] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
+	const char set4[26] = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
+		                    'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' };
+	const char set5[26] = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
+		                    'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' };
+	char* passStub = calloc(15, sizeof(char));
 
 	if (!passStub)
 		return NULL;
@@ -843,16 +848,9 @@ char* freerdp_assistance_generate_pass_stub(WINPR_ATTR_UNUSED DWORD flags)
 	passStub[2] = set3[nums[2] % sizeof(set3)];   /* character 2 */
 	passStub[3] = set4[nums[3] % sizeof(set4)];   /* character 3 */
 	passStub[4] = set5[nums[4] % sizeof(set5)];   /* character 4 */
-	passStub[5] = set1[nums[5] % sizeof(set1)];   /* character 5 */
-	passStub[6] = set1[nums[6] % sizeof(set1)];   /* character 6 */
-	passStub[7] = set1[nums[7] % sizeof(set1)];   /* character 7 */
-	passStub[8] = set1[nums[8] % sizeof(set1)];   /* character 8 */
-	passStub[9] = set1[nums[9] % sizeof(set1)];   /* character 9 */
-	passStub[10] = set1[nums[10] % sizeof(set1)]; /* character 10 */
-	passStub[11] = set1[nums[11] % sizeof(set1)]; /* character 11 */
-	passStub[12] = set1[nums[12] % sizeof(set1)]; /* character 12 */
-	passStub[13] = set1[nums[13] % sizeof(set1)]; /* character 13 */
-	passStub[14] = '\0';
+
+	for (size_t x = 5; x < ARRAYSIZE(nums); x++)
+		passStub[x] = set1[nums[x] % sizeof(set1)]; /* character 5 - 13 */
 	return passStub;
 }
 
@@ -1039,7 +1037,7 @@ char* freerdp_assistance_bin_to_hex_string(const void* raw, size_t size)
 static int freerdp_assistance_parse_uploadinfo(rdpAssistanceFile* file, char* uploadinfo,
                                                size_t uploadinfosize)
 {
-	const char escalated[9] = "Escalated";
+	const char escalated[9] = { 'E', 's', 'c', 'a', 'l', 'a', 't', 'e', 'd' };
 	const size_t esclen = sizeof(escalated);
 	const char* typestr = NULL;
 	size_t typelen = 0;
diff --git a/libfreerdp/crypto/certificate.c b/libfreerdp/crypto/certificate.c
index 86a35977f..9b7048044 100644
--- a/libfreerdp/crypto/certificate.c
+++ b/libfreerdp/crypto/certificate.c
@@ -182,7 +182,7 @@ struct rdp_certificate
  *
  */
 
-static const char rsa_magic[4] = "RSA1";
+static const char rsa_magic[4] = { 'R', 'S', 'A', '1' };
 
 static const char* certificate_read_errors[] = { "Certificate tag",
 	                                             "TBSCertificate",
diff --git a/winpr/libwinpr/clipboard/synthetic_file.c b/winpr/libwinpr/clipboard/synthetic_file.c
index 3ade815f6..b58164186 100644
--- a/winpr/libwinpr/clipboard/synthetic_file.c
+++ b/winpr/libwinpr/clipboard/synthetic_file.c
@@ -284,7 +284,7 @@ static BOOL add_directory_contents_to_list(wClipboard* clipboard, const WCHAR* l
 		const char* c;
 		const WCHAR* w;
 	} wildcard;
-	const char buffer[6] = "/\0*\0\0\0";
+	const char buffer[6] = { '/', '\0', '*', '\0', '\0', '\0' };
 	wildcard.c = buffer;
 	const size_t wildcardLen = ARRAYSIZE(buffer) / sizeof(WCHAR);