diff --git a/platformio.ini b/platformio.ini
index a2948d6c..b0e2b570 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -13,7 +13,7 @@ platform=atmelavr
 board=megaatmega2560
 framework=arduino
 build_unflags = -Os
-build_flags = -O3 -ffast-math -Wall -Wextra -std=c99
+build_flags = -O3 -ffast-math -funroll-loops -Wall -Wextra -std=c99
 lib_deps = EEPROM
 test_build_project_src = true
 debug_tool = simavr