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-rw-r--r--engines/sci/engine/kstring.cpp7
1 files changed, 5 insertions, 2 deletions
diff --git a/engines/sci/engine/kstring.cpp b/engines/sci/engine/kstring.cpp
index bfabbcc90e..74c1f99778 100644
--- a/engines/sci/engine/kstring.cpp
+++ b/engines/sci/engine/kstring.cpp
@@ -806,8 +806,11 @@ Common::String format(const Common::String &source, int argc, const reg_t *argv)
continue;
}
- assert(argIndex < argc);
- out += readPlaceholder(in, argv[argIndex++]);
+ if (argIndex < argc) {
+ out += readPlaceholder(in, argv[argIndex++]);
+ } else {
+ out += readPlaceholder(in, NULL_REG);
+ }
} else {
out += *in++;
}