diff --git a/test/jdk/java/foreign/nested/libNested.c b/test/jdk/java/foreign/nested/libNested.c
index a1414d6ed61..c31fb0dc4cc 100644
--- a/test/jdk/java/foreign/nested/libNested.c
+++ b/test/jdk/java/foreign/nested/libNested.c
@@ -26,6 +26,9 @@
 #else
 #define EXPORT
 #endif
+#ifdef _AIX
+#pragma align (natural)
+#endif
 
 struct S1{ double f0; long long f1; double f2; int f3; };
 union U1{ short f0; long long f1; short f2; char f3[4][3]; };
@@ -92,3 +95,7 @@ EXPORT struct S13 test_S13(struct S13 arg, struct S13(*cb)(struct S13)) { return
 EXPORT struct S14 test_S14(struct S14 arg, struct S14(*cb)(struct S14)) { return cb(arg); }
 EXPORT union U16 test_U16(union U16 arg, union U16(*cb)(union U16)) { return cb(arg); }
 EXPORT struct S15 test_S15(struct S15 arg, struct S15(*cb)(struct S15)) { return cb(arg); }
+
+#ifdef _AIX
+#pragma align (reset)
+#endif
diff --git a/test/jdk/java/foreign/shared.h b/test/jdk/java/foreign/shared.h
index 1cadc1075d6..0f6183891a7 100644
--- a/test/jdk/java/foreign/shared.h
+++ b/test/jdk/java/foreign/shared.h
@@ -34,6 +34,9 @@
 #else
 #define EXPORT
 #endif
+#ifdef _AIX
+#pragma align (natural)
+#endif
 
 struct S_I { int p0; };
 struct S_F { float p0; };
@@ -120,3 +123,7 @@ struct S_PPF { void* p0; void* p1; float p2; };
 struct S_PPD { void* p0; void* p1; double p2; };
 struct S_PPP { void* p0; void* p1; void* p2; };
 struct S_FFFF { float p0; float p1; float p2; float p3; };
+
+#ifdef _AIX
+#pragma align (reset)
+#endif