diff --git a/Project.toml b/Project.toml
index fc6c61a..8dd2370 100644
--- a/Project.toml
+++ b/Project.toml
@@ -3,7 +3,7 @@ uuid = "0f680547-7be7-4555-8820-bb198eeb646b"
 authors = [
     "Maarten Pronk <git@evetion.nl> and contributors."
 ]
-version = "0.2.5"
+version = "0.2.6"
 
 [deps]
 GeoFormatTypes = "68eda718-8dee-11e9-39e7-89f7f65f511f"
diff --git a/src/wkb.jl b/src/wkb.jl
index 0e31981..d0c7faa 100644
--- a/src/wkb.jl
+++ b/src/wkb.jl
@@ -146,6 +146,7 @@ function check_endianness(data)
 end
 
 GI.isgeometry(::WKBtype) = true
+GI.isgeometry(::Type{<:GFT.WellKnownBinary}) = true
 
 function GI.geomtrait(geom::WKBtype)
     check_endianness(geom.val)
diff --git a/src/wkt.jl b/src/wkt.jl
index 9dd7c30..74efa19 100644
--- a/src/wkt.jl
+++ b/src/wkt.jl
@@ -118,6 +118,7 @@ end
 # Implement GeoInterface for WKT, as wrapped by GeoFormatTypes
 const WKTtype = GFT.WellKnownText{GFT.Geom}
 GI.isgeometry(::WKTtype) = true
+GI.isgeometry(::Type{<:GFT.WellKnownText{GFT.Geom}}) = true
 
 Base.getindex(wkt::WKTtype, i) = GFT.WellKnownText(gftgeom, wkt.val[i])
 Base.lastindex(wkt::WKTtype) = lastindex(wkt.val)
diff --git a/test/runtests.jl b/test/runtests.jl
index 7fa2018..2b98f5d 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -98,7 +98,9 @@ import LibGEOS
         wkb = GFT.WellKnownBinary(GFT.Geom(), [0x0])
 
         @test GI.isgeometry(wkt)
+        @test GI.isgeometry(typeof(wkt))
         @test GI.isgeometry(wkb)
+        @test GI.isgeometry(typeof(wkb))
 
         wkt = GFT.WellKnownText(GFT.Geom(), "POINT (30 10)")
         @test GI.testgeometry(wkt)