diff --git a/apps/app_voicemail.c b/apps/app_voicemail.c
index 92af3ce621..d4dc2db3d3 100644
--- a/apps/app_voicemail.c
+++ b/apps/app_voicemail.c
@@ -3343,6 +3343,7 @@ static int retrieve_file(char *dir, int msgnum)
 			fprintf(f, "[message]\n");
 		for (x = 0; x < colcount; x++) {
 			rowdata[0] = '\0';
+			colsize = 0;
 			collen = sizeof(coltitle);
 			res = SQLDescribeCol(stmt, x + 1, (unsigned char *) coltitle, sizeof(coltitle), &collen, 
 						&datatype, &colsize, &decimaldigits, &nullable);
diff --git a/funcs/func_odbc.c b/funcs/func_odbc.c
index 8ba91da1b4..10cf50e832 100644
--- a/funcs/func_odbc.c
+++ b/funcs/func_odbc.c
@@ -589,7 +589,7 @@ static int acf_odbc_read(struct ast_channel *chan, const char *cmd, char *s, cha
 
 			if (y == 0) {
 				char colname[256];
-				SQLULEN maxcol;
+				SQLULEN maxcol = 0;
 
 				res = SQLDescribeCol(stmt, x + 1, (unsigned char *)colname, sizeof(colname), &collength, NULL, &maxcol, NULL, NULL);
 				ast_debug(3, "Got collength of %d and maxcol of %d for column '%s' (offset %d)\n", (int)collength, (int)maxcol, colname, x);
@@ -1197,6 +1197,8 @@ static char *cli_odbc_read(struct ast_cli_entry *e, int cmd, struct ast_cli_args
 			}
 			for (;;) {
 				for (x = 0; x < colcount; x++) {
+					maxcol = 0;
+
 					res = SQLDescribeCol(stmt, x + 1, (unsigned char *)colname, sizeof(colname), &collength, NULL, &maxcol, NULL, NULL);
 					if (((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) || collength == 0) {
 						snprintf(colname, sizeof(colname), "field%d", x);
diff --git a/res/res_config_odbc.c b/res/res_config_odbc.c
index c076555fa3..b31241235e 100644
--- a/res/res_config_odbc.c
+++ b/res/res_config_odbc.c
@@ -238,6 +238,7 @@ static struct ast_variable *realtime_odbc(const char *database, const char *tabl
 	}
 	for (x = 0; x < colcount; x++) {
 		rowdata[0] = '\0';
+		colsize = 0;
 		collen = sizeof(coltitle);
 		res = SQLDescribeCol(stmt, x + 1, (unsigned char *)coltitle, sizeof(coltitle), &collen, 
 					&datatype, &colsize, &decimaldigits, &nullable);
@@ -410,6 +411,7 @@ static struct ast_config *realtime_multi_odbc(const char *database, const char *
 		}
 		for (x=0;x<colcount;x++) {
 			rowdata[0] = '\0';
+			colsize = 0;
 			collen = sizeof(coltitle);
 			res = SQLDescribeCol(stmt, x + 1, (unsigned char *)coltitle, sizeof(coltitle), &collen, 
 						&datatype, &colsize, &decimaldigits, &nullable);