diff --git a/CMakeLists.txt b/CMakeLists.txt
index 045535e2..41c45459 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,7 +34,7 @@ file(WRITE "src/pip_version_str.h" "// This file was generated by PIP CMake, don
 option(ICU "Unicode support" 1)
 option(USB "USB support" 0)
 option(STL "Building with STL containers" 0)
-option(STL_IOSTREAM "Building with std iostream operators support" 0)
+option(STD_IOSTREAM "Building with std iostream operators support" 0)
 option(CRYPT "Crypt support" 0)
 option(FFTW "fftw3 support for PIFFT" 0)
 option(FFTW_THREADS "fftw3 support for threadsave" 1)
@@ -53,7 +53,7 @@ else()
 	message(STATUS "Build relaese version")
 endif()
 
-if(STL_IOSTREAM)
+if(STD_IOSTREAM)
 	add_definitions(-DPIP_STD_IOSTREAM)
 	message(STATUS "Building with std iostream operators support")
 else()