diff --git a/bacnet-stack/src/indtext.c b/bacnet-stack/src/indtext.c
index bfe645cc..841b393a 100644
--- a/bacnet-stack/src/indtext.c
+++ b/bacnet-stack/src/indtext.c
@@ -35,8 +35,21 @@
 #include <string.h>
 #include "indtext.h"
 
-#if defined(__BORLANDC__) || defined(_MSC_VER)
-#define strcasecmp stricmp
+#if !defined(__BORLANDC__) && !defined(_MSC_VER)
+#include <ctype.h>
+int stricmp(const char *s1, const char *s2)
+{
+    unsigned char c1,c2;
+
+    do {
+        c1 = *s1++;
+        c2 = *s2++;
+        c1 = (unsigned char) tolower( (unsigned char) c1);
+        c2 = (unsigned char) tolower( (unsigned char) c2);
+    } while((c1 == c2) && (c1 != '\0'));
+
+    return (int) c1-c2;
+}
 #endif
 
 bool indtext_by_string(
@@ -75,7 +88,7 @@ bool indtext_by_istring(
 
     if (data_list && search_name) {
         while (data_list->pString) {
-            if (strcasecmp(data_list->pString, search_name) == 0) {
+            if (stricmp(data_list->pString, search_name) == 0) {
                 index = data_list->index;
                 found = true;
                 break;