diff --git a/include/mbedtls/bn_mul.h b/include/mbedtls/bn_mul.h
index a3fc363815..30d445e63b 100644
--- a/include/mbedtls/bn_mul.h
+++ b/include/mbedtls/bn_mul.h
@@ -86,9 +86,11 @@
 
 #if defined(MBEDTLS_HAVE_ASM)
 
+/* *INDENT-OFF* */
 #ifndef asm
 #define asm __asm
 #endif
+/* *INDENT-ON* */
 
 /* armcc5 --gnu defines __GNUC__ but doesn't support GNU's extended asm */
 #if defined(__GNUC__) && \
diff --git a/library/aesni.c b/library/aesni.c
index 996292ff6d..4b16d92504 100644
--- a/library/aesni.c
+++ b/library/aesni.c
@@ -36,9 +36,11 @@
 
 #include <string.h>
 
+/* *INDENT-OFF* */
 #ifndef asm
 #define asm __asm
 #endif
+/* *INDENT-ON* */
 
 #if defined(MBEDTLS_HAVE_X86_64)
 
diff --git a/library/padlock.c b/library/padlock.c
index 837337413c..12ea2472d7 100644
--- a/library/padlock.c
+++ b/library/padlock.c
@@ -31,9 +31,11 @@
 
 #include <string.h>
 
+/* *INDENT-OFF* */
 #ifndef asm
 #define asm __asm
 #endif
+/* *INDENT-ON* */
 
 #if defined(MBEDTLS_HAVE_X86)
 
diff --git a/library/timing.c b/library/timing.c
index ca29e56a66..7f559bebd5 100644
--- a/library/timing.c
+++ b/library/timing.c
@@ -33,9 +33,11 @@
 #error "This module only works on Unix and Windows, see MBEDTLS_TIMING_C in config.h"
 #endif
 
+/* *INDENT-OFF* */
 #ifndef asm
 #define asm __asm
 #endif
+/* *INDENT-ON* */
 
 #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)