diff --git a/symtabAPI/src/dwarfWalker.C b/symtabAPI/src/dwarfWalker.C
index 2f26b6e6af..58165b32ee 100644
--- a/symtabAPI/src/dwarfWalker.C
+++ b/symtabAPI/src/dwarfWalker.C
@@ -1628,15 +1628,16 @@ bool DwarfWalker::getLineInformation(Dwarf_Unsigned &variableLineNo,
       fileName = "";
    }
    else if (status == DW_DLV_OK) {
+      StringTablePtr files = srcFiles();
       Dwarf_Unsigned fileNameDeclVal;
       DWARF_FAIL_RET(dwarf_formudata(fileDeclAttribute, &fileNameDeclVal, NULL));
       dwarf_dealloc( dbg(), fileDeclAttribute, DW_DLA_ATTR );
-      if (fileNameDeclVal > srcFiles()->size() || fileNameDeclVal <= 0) {
+      if (fileNameDeclVal >= files->size() || fileNameDeclVal <= 0) {
          dwarf_printf("Dwarf error reading line index %d from srcFiles of size %lu\n",
-                      fileNameDeclVal, srcFiles()->size());
+                      fileNameDeclVal, files->size());
          return false;
       }
-      fileName = (*srcFiles())[fileNameDeclVal].str;
+      fileName = ((files->get<0>())[fileNameDeclVal]).str;
    }
    else {
       return true;