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-rw-r--r--source/pdf/js/util.js.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/source/pdf/js/util.js.h b/source/pdf/js/util.js.h
index a4e5124f..9d356c1a 100644
--- a/source/pdf/js/util.js.h
+++ b/source/pdf/js/util.js.h
@@ -860,7 +860,7 @@
"\n"
"function AFPercent_Format(nDec, sepStyle) {\n"
"var val = AFMakeNumber(event.value);\n"
-"if (!val) {\n"
+"if (val == null) {\n"
"event.value = '';\n"
"return;\n"
"}\n"