Nowadays, the construction industry causes many environmental problems because of the high use of natural aggregates and the large quantity of cement which produces CO2 emissions. Therefore, it becomes necessary to look for alternative materials in order to reduce these negative environmental effects. One possibility is the use of dune sand, which is available in large amounts since dunes represent approximately 20% of the land surface of the Earth. The main advantage of dune sand is that it does not need to be crushed or washed like river sand or quarry sand. Only transportation is required, which means less energy consumption and lower emissions compared to conventional sands. In this study, an experimental work was done to test dune sand from two regions in Algeria, namely Touggourt and Boussada, for the production of an eco-friendly mortar. The idea was to reduce cement quantity and to evaluate the use of dune sand in textile-reinforced mortars (TRM). For this, the sand-to-binder ratio (s/b) was increased from the usual 0.36 to a value as high as 2.16, short polypropylene fibers were added at 1.5 and 2.0% by volume. Compressive strength of the mortar mixes was tested. Results show that Boussada dune sand with short fibers gives better mechanical performance. An increase of about 27% in compressive strength was obtained compared to classical mortar.