diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8aaefa06..f07abd07 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,19 +7,21 @@ set(CMAKE_MACOSX_RPATH 1)
 set( LibraryVersion "1.1" )
 add_definitions(-DLIBRARY_VERSION="${LibraryVersion}")
 
-find_path( MPFR_FOUND mpfr.h )
-if( MPFR_FOUND MATCHES "MPFR_FOUND-NOTFOUND" )
-	if( EXISTS ${MPFR_PATH}/include/mpfr.h )
-		set( MPFR_FOUND FOUND )
+if (${REST_MPFR} MATCHES "ON")
+	find_path( MPFR_FOUND mpfr.h )
+	if( MPFR_FOUND MATCHES "MPFR_FOUND-NOTFOUND" )
+		if( EXISTS ${MPFR_PATH}/include/mpfr.h )
+			set( MPFR_FOUND FOUND )
+		endif()
 	endif()
-endif()
 
-if( MPFR_FOUND MATCHES "MPFR_FOUND-NOTFOUND" )
-	message( FATAL_ERROR "MPFR library was not found. Adding the location to the installation path may solve this problem.\n Use -DMPFR_PATH=/path/to/mpfr/" )
-else()
-	set( external_include_dirs ${external_include_dirs} ${MPFR_PATH}/include )
-	link_directories( ${MPFR_PATH}/lib )
-endif()
+	if( MPFR_FOUND MATCHES "MPFR_FOUND-NOTFOUND" )
+		message( FATAL_ERROR "MPFR library was not found. Adding the location to the installation path may solve this problem.\n Use -DMPFR_PATH=/path/to/mpfr/" )
+	else()
+		set( external_include_dirs ${external_include_dirs} ${MPFR_PATH}/include )
+		link_directories( ${MPFR_PATH}/lib )
+	endif()
+endif (${REST_MPFR} MATCHES "ON")
 
 #-------------------------------------------------------------------------------------------------------
 # Add the SolarAxionFlux library submodule as an external project.
@@ -48,7 +50,11 @@ if (${REST_SOLAXFLUX} MATCHES "ON")
     set( external_libs ${external_libs} -laxionflux)
 endif (${REST_SOLAXFLUX} MATCHES "ON")
 
-set( external_libs ${external_libs} -lmpfr )
+if (${REST_MPFR} MATCHES "ON")
+	set( external_libs ${external_libs} -lmpfr )
+else()
+	set( external_libs ${external_libs} )
+endif (${REST_MPFR} MATCHES "ON")
 
 COMPILELIB("")