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-rw-r--r--apt-pkg/deb/debversion.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/apt-pkg/deb/debversion.cc b/apt-pkg/deb/debversion.cc
index d2ebd2805..005f1bce0 100644
--- a/apt-pkg/deb/debversion.cc
+++ b/apt-pkg/deb/debversion.cc
@@ -40,7 +40,7 @@ static int order(char c)
{
if (isdigit(c))
return 0;
- else if (isalpha(c))
+ else if (isalpha_ascii(c))
return c;
else if (c == '~')
return -1;