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-rw-r--r--engines/sci/engine/kstring.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/engines/sci/engine/kstring.cpp b/engines/sci/engine/kstring.cpp
index c22d7c7b1e..c4db0b891c 100644
--- a/engines/sci/engine/kstring.cpp
+++ b/engines/sci/engine/kstring.cpp
@@ -165,6 +165,7 @@ reg_t kReadNumber(EngineState *s, int argc, reg_t *argv) {
// do clipping. In SQ4 we get the door code in here and that's even
// larger than uint32!
if (*source == '-') {
+ // FIXME: Setting result to -1 does _not_ negate the output.
result = -1;
source++;
}