diff --git a/build_files/build_environment/patches/osl.diff b/build_files/build_environment/patches/osl.diff
index 8578a1b782b..032303c5ca7 100644
--- a/build_files/build_environment/patches/osl.diff
+++ b/build_files/build_environment/patches/osl.diff
@@ -75,3 +75,18 @@ index 46e4529..8e86486 100644
      return false;
  }
  
+diff --git a/src/liboslexec/CMakeLists.txt b/src/liboslexec/CMakeLists.txt
+index 6bb0d175..19f13513 100644
+--- a/src/liboslexec/CMakeLists.txt
++++ b/src/liboslexec/CMakeLists.txt
+@@ -148,7 +148,9 @@ file (GLOB exec_headers "*.h")
+ file (GLOB compiler_headers "../liboslcomp/*.h")
+ 
+ FLEX_BISON ( osolex.l osogram.y oso lib_src exec_headers )
+-FLEX_BISON ( ../liboslcomp/osllex.l ../liboslcomp/oslgram.y osl lib_src compiler_headers )
++if (BUILD_SHARED_LIBS)
++    FLEX_BISON ( ../liboslcomp/osllex.l ../liboslcomp/oslgram.y osl lib_src compiler_headers )
++endif()
+ 
+ set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS" )
+