diff --git a/common_x86.h b/common_x86.h
index fbb91f888..eaf395806 100644
--- a/common_x86.h
+++ b/common_x86.h
@@ -282,7 +282,7 @@ REALNAME:
 #define EPILOGUE .end	 REALNAME
 #endif
 
-#if defined(OS_LINUX) || defined(OS_FreeBSD) || defined(OS_NetBSD) || defined(__ELF__)
+#if defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_NetBSD) || defined(__ELF__)
 #define PROLOGUE \
 	.text; \
 	.align 16; \
diff --git a/common_x86_64.h b/common_x86_64.h
index 53b702185..735c9b294 100644
--- a/common_x86_64.h
+++ b/common_x86_64.h
@@ -353,7 +353,7 @@ REALNAME:
 #define EPILOGUE .end	 REALNAME
 #endif
 
-#if defined(OS_LINUX) || defined(OS_FreeBSD) || defined(OS_NetBSD) || defined(__ELF__) || defined(C_PGI)
+#if defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_NetBSD) || defined(__ELF__) || defined(C_PGI)
 #define PROLOGUE \
 	.text; \
 	.align 512; \
diff --git a/driver/others/memory.c b/driver/others/memory.c
index 3f1a5f60a..9a925d290 100644
--- a/driver/others/memory.c
+++ b/driver/others/memory.c
@@ -103,7 +103,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <sys/syscall.h>
 #endif
 
-#if defined(OS_FreeBSD) || defined(OS_Darwin)
+#if defined(OS_FREEBSD) || defined(OS_Darwin)
 #include <sys/sysctl.h>
 #endif
 
@@ -185,7 +185,7 @@ int get_num_procs(void) {
 
 #endif
 
-#if defined(OS_FreeBSD) || defined(OS_Darwin)
+#if defined(OS_FREEBSD) || defined(OS_Darwin)
 
 int get_num_procs(void) {
   
@@ -215,7 +215,7 @@ int  goto_get_num_procs  (void) {
 
 int blas_get_cpu_number(void){
   char *p;
-#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FreeBSD) || defined(OS_Darwin)
+#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FREEBSD) || defined(OS_Darwin)
   int max_num;
 #endif
   int blas_goto_num   = 0;
@@ -223,7 +223,7 @@ int blas_get_cpu_number(void){
 
   if (blas_num_threads) return blas_num_threads;
 
-#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FreeBSD) || defined(OS_Darwin)
+#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FREEBSD) || defined(OS_Darwin)
   max_num = get_num_procs();
 #endif
 
@@ -250,7 +250,7 @@ int blas_get_cpu_number(void){
   else if (blas_omp_num > 0) blas_num_threads = blas_omp_num;
   else blas_num_threads = MAX_CPU_NUMBER;
 
-#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FreeBSD) || defined(OS_Darwin)
+#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FREEBSD) || defined(OS_Darwin)
   if (blas_num_threads > max_num) blas_num_threads = max_num;
 #endif