diff --git a/main.cpp b/main.cpp
index b21ac5ea..4965c836 100644
--- a/main.cpp
+++ b/main.cpp
@@ -2668,7 +2668,7 @@ int main(int argc, char **argv) {
 		{"empty-csv-columns-are-null", no_argument, &prevent[P_EMPTY_CSV_COLUMNS], 1},
 		{"convert-stringified-ids-to-numbers", no_argument, &additional[A_CONVERT_NUMERIC_IDS], 1},
 		{"use-attribute-for-id", required_argument, 0, '~'},
-		{"single-precision", required_argument, &prevent[P_SINGLE_PRECISION], 1},
+		{"single-precision", no_argument, &prevent[P_SINGLE_PRECISION], 1},
 
 		{"Filtering features by attributes", 0, 0, 0},
 		{"feature-filter-file", required_argument, 0, 'J'},