diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7b953d9b2..35a2296c7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -312,14 +312,14 @@ endif()
 
 # we will check if yosys already exist. if not then build it
 if (OPENFPGA_WITH_YOSYS)
-    if(EXISTS ${CMAKE_CURRENT_BINARY_DIR}/yosys)
+    if(EXISTS ${CMAKE_CURRENT_BINARY_DIR}/yosys/bin/yosys)
         message(STATUS "Yosys pre-build exist so skipping it")
     else ()
         # run makefile provided, we pass-on the options to the local make file 
         add_custom_target(
             yosys ALL 
             COMMAND $(MAKE) config-gcc
-            COMMAND $(MAKE) install PREFIX=${CMAKE_CURRENT_BINARY_DIR}/yosys
+            COMMAND $(MAKE) install PREFIX=${CMAKE_CURRENT_BINARY_DIR}/yosys/
             WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/yosys
             COMMENT "Compile Yosys with given Makefile"
         )
@@ -331,7 +331,7 @@ if (OPENFPGA_WITH_YOSYS)
                 yosys-plugins ALL
                 COMMAND $(MAKE) install_ql-qlf YOSYS_PATH=${CMAKE_CURRENT_BINARY_DIR}/yosys EXTRA_FLAGS="-DPASS_NAME=synth_ql"
                 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/yosys-plugins
-                DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/yosys
+                DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/yosys/bin/yosys
                 COMMENT "Compile Yosys-plugins with given Makefile"
             )
             add_dependencies(yosys-plugins yosys)