  We present an analysis of X-ray spectra of the high mass X-ray binary 4U
0115+634 as observed with Suzaku and RXTE in 2011 July, during the fading phase
of a giant X-ray outburst. We used a continuum model consisting of an absorbed
cutoff power-law and an ad-hoc Gaussian emission feature centered around 8.5
keV, which we discuss to be due to cyclotron emission. Our results are
consistent with a fundamental cyclotron absorption line centered at
${\sim}10.2$ keV for all observed flux ranges. At the same time we rule out
significant influence of the 8.5 kev Gaussian on the CRSF parameters, which are
not consistent with the cyclotron line energies and depths of previously
reported flux-dependent descriptions. We also show that some continuum models
can lead to artificial line-like residuals in the analyzed spectra, which are
then misinterpreted as unphysically strong cyclotron lines. Specifically, our
results do not support the existence of a previously claimed additional
cyclotron feature at ${\sim}15$ keV. Apart from these features, we find for the
first time evidence for a He-like Fe XXV emission line at ${\sim}6.7$ keV and
weak H-like Fe XXVI emission close to ${\sim}7.0$ keV.
