diff --git a/include/perk/perk_meta.h b/include/perk/perk_meta.h
index 3ba97aa..931ff75 100644
--- a/include/perk/perk_meta.h
+++ b/include/perk/perk_meta.h
@@ -107,8 +107,8 @@ struct pe_meta_opt_hdr_vers {
 };
 
 struct pe_meta_opt_hdr_align {
-	uint32_t	section_align;
-	uint32_t	file_align;
+	uint32_t	coh_section_align;
+	uint32_t	coh_file_align;
 };
 
 struct pe_meta_opt_hdr_img {
diff --git a/include/perk/perk_structs.h b/include/perk/perk_structs.h
index b81f831..9a20036 100644
--- a/include/perk/perk_structs.h
+++ b/include/perk/perk_structs.h
@@ -52,8 +52,8 @@ struct pe_raw_opt_hdr_std {
 };
 
 struct pe_raw_opt_hdr_align {
-	unsigned char	section_align			[0x04];		/* 0x20 */
-	unsigned char	file_align			[0x04];         /* 0x24 */
+	unsigned char	coh_section_align		[0x04];		/* 0x20 */
+	unsigned char	coh_file_align			[0x04];         /* 0x24 */
 };
 
 struct pe_raw_opt_hdr_vers {
diff --git a/src/reader/pe_read_optional_header.c b/src/reader/pe_read_optional_header.c
index b32dd6f..5a2e10a 100644
--- a/src/reader/pe_read_optional_header.c
+++ b/src/reader/pe_read_optional_header.c
@@ -66,8 +66,8 @@ static int pe_read_optional_header_structs(const union pe_raw_opt_hdr * p, struc
 	m->vers.win32_ver			= pe_read_long(avers->win32_ver);
 
 	/* align */
-	m->align.section_align			= pe_read_long(aalign->section_align);
-	m->align.file_align			= pe_read_long(aalign->file_align);
+	m->align.coh_section_align		= pe_read_long(aalign->coh_section_align);
+	m->align.coh_file_align			= pe_read_long(aalign->coh_file_align);
 
 	/* img */
 	m->img.size_of_image			= pe_read_long(aimg->size_of_image);