diff --git a/src/lib/y2partitioner/actions/controllers/lvm_vg.rb b/src/lib/y2partitioner/actions/controllers/lvm_vg.rb
index 06ccf47bc9..a57097fd6d 100644
--- a/src/lib/y2partitioner/actions/controllers/lvm_vg.rb
+++ b/src/lib/y2partitioner/actions/controllers/lvm_vg.rb
@@ -264,7 +264,7 @@ def invalid_extent_size?
         #
         # @return [String]
         def invalid_extent_size_message
-          _("The data entered in invalid. Insert a physical extent size larger than 1 KiB\n" \
+          _("The data entered is invalid. Insert a physical extent size larger than 1 KiB\n" \
             "in powers of 2 and multiple of 128 KiB, for example, \"512 KiB\" or \"4 MiB\"")
         end
 
diff --git a/test/y2partitioner/actions/controllers/lvm_vg_test.rb b/test/y2partitioner/actions/controllers/lvm_vg_test.rb
index 6f1f8b8fe9..1c2169f7b8 100644
--- a/test/y2partitioner/actions/controllers/lvm_vg_test.rb
+++ b/test/y2partitioner/actions/controllers/lvm_vg_test.rb
@@ -169,7 +169,7 @@ def dev(name)
       it "contains a message for invalid extent size" do
         errors = controller.extent_size_errors
         expect(errors).to_not be_empty
-        expect(errors).to include(/data entered in invalid/)
+        expect(errors).to include(/data entered is invalid/)
       end
     end
 
@@ -179,7 +179,7 @@ def dev(name)
       it "contains a message for invalid extent size" do
         errors = controller.extent_size_errors
         expect(errors).to_not be_empty
-        expect(errors).to include(/data entered in invalid/)
+        expect(errors).to include(/data entered is invalid/)
       end
     end
 
@@ -189,7 +189,7 @@ def dev(name)
       it "contains a message for invalid extent size" do
         errors = controller.extent_size_errors
         expect(errors).to_not be_empty
-        expect(errors).to include(/data entered in invalid/)
+        expect(errors).to include(/data entered is invalid/)
       end
     end
 
@@ -199,7 +199,7 @@ def dev(name)
       it "contains a message for invalid extent size" do
         errors = controller.extent_size_errors
         expect(errors).to_not be_empty
-        expect(errors).to include(/data entered in invalid/)
+        expect(errors).to include(/data entered is invalid/)
       end
     end