diff --git a/Installing-on-Linux.md b/Installing-on-Linux.md
index a774eaf..54f9731 100644
--- a/Installing-on-Linux.md
+++ b/Installing-on-Linux.md
@@ -309,7 +309,7 @@ git clone https://github.com/PCSX2/pcsx2.git
 mkdir pcsx2/build && cd pcsx2/build
 git submodule update --init --recursive
 
-cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_REPLAY_LOADERS=TRUE -DCMAKE_BUILD_PO=FALSE -DGTK3_API=TRUE -DDISABLE_SETCAP=TRUE ..
+cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_REPLAY_LOADERS=TRUE -DCMAKE_BUILD_PO=FALSE -DDISABLE_SETCAP=TRUE ..
 
 make -j$(nproc)
 make install