diff --git a/lib/libflif/Tupfile b/lib/libflif/Tupfile
index 8cdb257d4..a0c8ab1cc 100644
--- a/lib/libflif/Tupfile
+++ b/lib/libflif/Tupfile
@@ -3,7 +3,7 @@ include_rules
 CXX = `pkg-config genode-base --variable cxx`
 LD = `pkg-config genode-base --variable ld`
 
-PKG_CONFIGS = genode-lib stdcxx libm
+PKG_CONFIGS = genode-lib stdcxx libm libpng zlib
 
 # See upstream/src/CMakeLists.txt
 FLIF_SRC_DIR = upstream/src
@@ -30,7 +30,7 @@ CXXFLAGS += -DLODEPNG_NO_COMPILE_PNG -DLODEPNG_NO_COMPILE_DISK
 CXXFLAGS += -DNDEBUG -O2 -ftree-vectorize -Wall
 CXXFLAGS += -DINT16_MAX=0x7fff
 
-CXXFLAGS += `pkg-config --cflags $(PKG_CONFIGS) png zlib`
+CXXFLAGS += `pkg-config --cflags $(PKG_CONFIGS)`
 
 LDFLAGS += `pkg-config --libs $(PKG_CONFIGS)`