diff --git a/pkgs/development/libraries/ffmpeg/generic.nix b/pkgs/development/libraries/ffmpeg/generic.nix
index 1f9fb446cf4e..e1957463935b 100644
--- a/pkgs/development/libraries/ffmpeg/generic.nix
+++ b/pkgs/development/libraries/ffmpeg/generic.nix
@@ -40,7 +40,7 @@
 , withDav1d ? withHeadlessDeps # AV1 decoder (focused on speed and correctness)
 , withDc1394 ? withFullDeps && !stdenv.isDarwin # IIDC-1394 grabbing (ieee 1394)
 , withDrm ? withHeadlessDeps && (with stdenv; isLinux || isFreeBSD) # libdrm support
-, withFdkAac ? withFullDeps && withUnfree # Fraunhofer FDK AAC de/encoder
+, withFdkAac ? withFullDeps && (!withGPL || withUnfree) # Fraunhofer FDK AAC de/encoder
 , withFlite ? withFullDeps # Voice Synthesis
 , withFontconfig ? withHeadlessDeps # Needed for drawtext filter
 , withFreetype ? withHeadlessDeps # Needed for drawtext filter