diff --git a/Project.toml b/Project.toml
index cfab2e8..ebdec6e 100644
--- a/Project.toml
+++ b/Project.toml
@@ -4,10 +4,8 @@ authors = ["Uwe Hernandez Acosta <u.hernandez@hzdr.de>", "Simeon Ehrig", "Klaus
 version = "0.1.0"
 
 [deps]
-DocStringExtensions = "ffbed154-4ef7-542d-bbb7-c09d3a79fcae"
 QEDbase = "10e22c08-3ccb-4172-bfcf-7d7aa3d04d93"
 
 [compat]
-DocStringExtensions = "0.9"
 QEDbase = "0.1"
 julia = "1.6"
diff --git a/src/QEDprocesses.jl b/src/QEDprocesses.jl
index aa31368..6d6ddb3 100644
--- a/src/QEDprocesses.jl
+++ b/src/QEDprocesses.jl
@@ -28,7 +28,6 @@ export AbstractCoordinateSystem, SphericalCoordinateSystem
 export AbstractFrameOfReference, CenterOfMomentumFrame, ElectronRestFrame
 export AbstractPhasespaceDefinition, PhasespaceDefinition
 
-using DocStringExtensions
 using QEDbase
 
 include("utils.jl")
diff --git a/src/interfaces/process_interface.jl b/src/interfaces/process_interface.jl
index 57cddc6..5889920 100644
--- a/src/interfaces/process_interface.jl
+++ b/src/interfaces/process_interface.jl
@@ -182,7 +182,7 @@ function _phase_space_factor end
 
 """
 
-    $(TYPEDSIGNATURES)
+    number_incoming_particles(proc_def::AbstractProcessDefinition)
 
 Return the number of incoming particles of a given process. 
 """
@@ -192,7 +192,7 @@ end
 
 """
 
-    $(TYPEDSIGNATURES)
+    number_outgoing_particles(proc_def::AbstractProcessDefinition)
 
 Return the number of outgoing particles of a given process. 
 """