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-rw-r--r--src/industry_cmd.cpp6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/industry_cmd.cpp b/src/industry_cmd.cpp
index 1aa369c5e..05da2c9dc 100644
--- a/src/industry_cmd.cpp
+++ b/src/industry_cmd.cpp
@@ -2052,7 +2052,11 @@ static void ChangeIndustryProduction(Industry *i, bool monthly)
new_prod = old_prod = i->production_rate[j];
- if (only_decrease || Chance16(1, 3)) mult *= -1;
+ if (only_decrease) {
+ mult = -1;
+ } else if (Chance16(1, 3)) {
+ mult *= -1;
+ }
if (Chance16(1, 22)) {
new_prod += mult * (max(((RandomRange(50) + 10) * old_prod) >> 8, 1U));