diff --git a/makefile b/makefile
index 8e176b6bc..9218eaf14 100755
--- a/makefile
+++ b/makefile
@@ -298,10 +298,16 @@ $(BUILD_DIR)/%.pyh: %.py
 	$(Q) $(PYTHONEXE) scripts/compile_tools/hexdump.py "$<" "$@"
 
 # Calculate dependencies
-$(BUILD_DIR)/%.d: $(PYHEADERS) %.cpp
-	@echo "Checking dependencies for $*.cpp"
+$(BUILD_DIR)/%.d: %.cpp
+	@echo "Checking dependencies for $<"
 	$(Q) if [ ! -d "$(@D)" ]; then mkdir -p "$(@D)"; fi;
-	$(Q) $(SMILEICXX) $(CXXFLAGS) -MF"$@" -MM -MP -MT"$@ $(@:.d=.o)" $*.cpp
+	$(Q) $(SMILEICXX) $(CXXFLAGS) -MF"$@" -MM -MP -MT"$@ $(@:.d=.o)" $<
+
+# Calculate dependencies: special for Params.cpp which needs pyh files
+$(BUILD_DIR)/src/Params/Params.d: src/Params/Params.cpp $(PYHEADERS)
+        @echo "Checking dependencies for $<"
+        $(Q) if [ ! -d "$(@D)" ]; then mkdir -p "$(@D)"; fi;
+        $(Q) $(SMILEICXX) $(CXXFLAGS) -MF"$@" -MM -MP -MT"$@ $(@:.d=.o)" $<
 
 ifeq ($(findstring icpc, $(COMPILER_INFO)), icpc)