diff --git a/src/ioc/db/dbExtractArray.c b/src/ioc/db/dbExtractArray.c
index 95eca4bfa..29d532530 100644
--- a/src/ioc/db/dbExtractArray.c
+++ b/src/ioc/db/dbExtractArray.c
@@ -36,21 +36,21 @@ void dbExtractArrayFromRec(const dbAddr *paddr, void *pto,
     char isString = (paddr->field_type == DBF_STRING);
 
     if (nRequest > no_elements) nRequest = no_elements;
-    if (isString && dstSize >= MAX_STRING_SIZE) dstSize = MAX_STRING_SIZE - 1;
+    if (isString && srcSize > MAX_STRING_SIZE) dstSize = MAX_STRING_SIZE;
 
-    if (increment == 1) {
+    if (increment == 1 && dstSize == srcSize) {
         nUpperPart = nRequest < no_elements - offset ? nRequest : no_elements - offset;
         memcpy(pdst, &psrc[offset * srcSize], dstSize * nUpperPart);
         if (nRequest > nUpperPart)
             memcpy(&pdst[dstSize * nUpperPart], psrc, dstSize * (nRequest - nUpperPart));
         if (isString)
             for (i = 1; i <= nRequest; i++)
-                pdst[dstSize*i] = '\0';
+                pdst[dstSize*i-1] = '\0';
     } else {
-        for (; nRequest > 0; nRequest--, pdst += srcSize, offset += increment) {
+        for (; nRequest > 0; nRequest--, pdst += dstSize, offset += increment) {
             offset %= no_elements;
             memcpy(pdst, &psrc[offset*srcSize], dstSize);
-            if (isString) pdst[dstSize] = '\0';
+            if (isString) pdst[dstSize-1] = '\0';
         }
     }
 }