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-rw-r--r--src/lib/entropy/rdrand/rdrand.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/entropy/rdrand/rdrand.cpp b/src/lib/entropy/rdrand/rdrand.cpp
index 3ae924cde..74876e203 100644
--- a/src/lib/entropy/rdrand/rdrand.cpp
+++ b/src/lib/entropy/rdrand/rdrand.cpp
@@ -38,7 +38,7 @@ void Intel_Rdrand::poll(Entropy_Accumulator& accum)
{
unsigned int r = 0;
-#if BOTAN_USE_GCC_INLINE_ASM
+#if defined(BOTAN_USE_GCC_INLINE_ASM)
int cf = 0;
// Encoding of rdrand %eax