diff --git a/makefiles/Makefile.dotnet.mk b/makefiles/Makefile.dotnet.mk
index 8f1acab994..12f0efb9e4 100644
--- a/makefiles/Makefile.dotnet.mk
+++ b/makefiles/Makefile.dotnet.mk
@@ -273,7 +273,7 @@ $(OBJ_DIR)/swig/sat_csharp_wrap.$O: \
  -c $(GEN_PATH)$Sortools$Ssat$Ssat_csharp_wrap.cc \
  $(OBJ_OUT)$(OBJ_DIR)$Sswig$Ssat_csharp_wrap.$O
 
-$(DOTNET_ORTOOLS_SNK): $(SRC_DIR)/tools/dotnet/CreateSigningKey/CreateSigningKey.csproj | $(BIN_DIR)
+$(DOTNET_ORTOOLS_SNK): tools/dotnet/CreateSigningKey/CreateSigningKey.csproj | $(BIN_DIR)
 	"$(DOTNET_BIN)" run --project tools$Sdotnet$SCreateSigningKey$SCreateSigningKey.csproj $S$(DOTNET_ORTOOLS_SNK_PATH)
 
 $(LIB_DIR)/$(OR_TOOLS_NATIVE_ASSEMBLY_NAME).$(SWIG_DOTNET_LIB_SUFFIX): \