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-rw-r--r--engines/agi/wagparser.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/engines/agi/wagparser.cpp b/engines/agi/wagparser.cpp
index 14159c0147..39f9e0dd92 100644
--- a/engines/agi/wagparser.cpp
+++ b/engines/agi/wagparser.cpp
@@ -112,11 +112,11 @@ WagFileParser::~WagFileParser() {
bool WagFileParser::checkAgiVersionProperty(const WagProperty &version) const {
if (version.getCode() == WagProperty::PC_INTVERSION && // Must be AGI interpreter version property
version.getSize() >= 3 && // Need at least three characters for a version number like "X.Y"
- isdigit(version.getData()[0]) && // And the first character must be a digit
+ isdigit(static_cast<unsigned char>(version.getData()[0])) && // And the first character must be a digit
(version.getData()[1] == ',' || version.getData()[1] == '.')) { // And the second a comma or a period
for (int i = 2; i < version.getSize(); i++) // And the rest must all be digits
- if (!isdigit(version.getData()[i]))
+ if (!isdigit(static_cast<unsigned char>(version.getData()[i])))
return false; // Bail out if found a non-digit after the decimal point
return true;