diff --git a/kandinsky/Makefile b/kandinsky/Makefile
index 3db532ac7..dc149f5e4 100644
--- a/kandinsky/Makefile
+++ b/kandinsky/Makefile
@@ -8,7 +8,8 @@ kandinsky/src/text.c: kandinsky/src/font.h
 
 font_files = $(addprefix kandinsky/src/, font.h font.c)
 
-$(font_files): kandinsky/fonts/rasterizer
+kandinsky/src/font.h: kandinsky/src/font.c
+kandinsky/src/font.c: kandinsky/fonts/rasterizer
 	@echo "RASTER  $(font_files)"
 	@$< kandinsky/fonts/ProggyClean.ttf 16 16 $(font_files)
 
diff --git a/poincare/Makefile b/poincare/Makefile
index b53437717..95f225630 100644
--- a/poincare/Makefile
+++ b/poincare/Makefile
@@ -2,14 +2,16 @@ SFLAGS += -Ipoincare/include
 objs += $(addprefix poincare/src/, expression.o number.o fraction.o power.o expression_lexer.o expression_parser.o)
 
 lexer_files = $(addprefix poincare/src/, expression_lexer.cpp expression_lexer.hpp)
-$(lexer_files): poincare/src/expression_lexer.l poincare/src/expression_parser.hpp
+poincare/src/expression_lexer.hpp: poincare/src/expression_lexer.cpp
+poincare/src/expression_lexer.cpp: poincare/src/expression_lexer.l
 	@echo "FLEX    $(lexer_files)"
 	@flex -P poincare_expression_yy --header-file=poincare/src/expression_lexer.hpp -o poincare/src/expression_lexer.cpp $<
 
 poincare/src/expression_lexer.o: CXXFLAGS += -Wno-deprecated-register -Wno-unused-value -Wno-unused-function
 
 parser_files = $(addprefix poincare/src/, expression_parser.cpp expression_parser.hpp)
-$(parser_files): poincare/src/expression_parser.y
+poincare/src/expression_parser.hpp: poincare/src/expression_parser.cpp
+poincare/src/expression_parser.cpp: poincare/src/expression_parser.y
 	@echo "BISON   $(parser_files)"
 	@bison -d -p poincare_expression_yy -o poincare/src/expression_parser.cpp $<