diff --git a/python/plugins/processing/algs/grass7/description/v.buffer.distance.txt b/python/plugins/processing/algs/grass7/description/v.buffer.distance.txt
index 2a46a2afbbd..2cce004d694 100644
--- a/python/plugins/processing/algs/grass7/description/v.buffer.distance.txt
+++ b/python/plugins/processing/algs/grass7/description/v.buffer.distance.txt
@@ -2,8 +2,8 @@ v.buffer
 v.buffer.distance - Creates a buffer around features of given type.
 Vector (v.*)
 ParameterVector|input|Input vector layer|-1|False
-ParameterString|distance|Buffer distance in map units|
-ParameterString|tolerance|Maximum distance between theoretical arc and polygon segments as multiple of buffer|0.01
+ParameterNumber|distance|Buffer distance in map units|None|None|100.0
+ParameterNumber|tolerance|Maximum distance between theoretical arc and polygon segments as multiple of buffer|None|None|0.01
 ParameterBoolean|-s|Make outside corners straight|False
 ParameterBoolean|-c|Do not make caps at the ends of polylines|False
 OutputVector|output|Buffer