DRC ErrType(3)

Application: kicad
Version: (2015-06-10 BZR 5730, Git 63c978d)-product release build
wxWidgets: Version 3.0.2 (debug,wchar_t,compiler with C++ ABI 1002,GCC 4.9.2,wx containers,compatible with 2.8)
Platform: Windows 7 (build 7601, Service Pack 1), 64-bit edition, 64 bit, Little endian, wxMSW
Boost version: 1.57.0
         USE_WX_GRAPHICS_CONTEXT=OFF
         USE_WX_OVERLAY=OFF
         KICAD_SCRIPTING=ON
         KICAD_SCRIPTING_MODULES=ON
         KICAD_SCRIPTING_WXPYTHON=ON
         USE_FP_LIB_TABLE=HARD_CODED_ON
         BUILD_GITHUB_PLUGIN=ON

I can not figure out if it's a bug or am I committing some error, the error that the DRC tells me is:

ErrType(3): Pin connected to some others pins but no pin to drive it
    @ (143,51 mm,110,49 mm): Pin 1 (Power input) of component #PWR04 is not driven (Net 1).

This issue comes up when using the library "power" components in EEschema, eg if I connect + 12V to a connector and then to another, when I run DRC returned the error.
The only way I've found to avoid the error is to change the type of the component pin + 12V, as "input power" to "passive".
There is another way to avoid this?

If possible I can attach a simple project that return error.