2 files changed, 2 insertions, 2 deletions
diff --git a/compat/strtol.c b/compat/strtol.c
index 811006a..b7f6919 100644
--- a/compat/strtol.c
+++ b/compat/strtol.c
@@ -53,7 +53,7 @@ strtol(
      */
 
     p = string;
-    while (isspace(UCHAR(*p))) {
+    while (TclIsSpaceProc(*p)) {
 	p += 1;
     }
 
diff --git a/compat/strtoul.c b/compat/strtoul.c
index 15587f1..e37eb05 100644
--- a/compat/strtoul.c
+++ b/compat/strtoul.c
@@ -74,7 +74,7 @@ strtoul(
      */
 
     p = string;
-    while (isspace(UCHAR(*p))) {
+    while (TclIsSpaceProc(*p)) {
 	p += 1;
     }
     if (*p == '-') {