diff --git a/examples/system-info.c b/examples/system-info.c
index 063476695524092e6b4a236cd8fbe814a02e802c..aca0ed52c50fbbb6b7a2bbfc2b6c2a3be5eab64e 100644
--- a/examples/system-info.c
+++ b/examples/system-info.c
@@ -45,9 +45,9 @@ main (int argc,
   g_print ("{\n");
 
   g_print ("  \"can-run\": {\n");
-  g_print ("    \"i386-linux-gnu\": %s,\n",
+  g_print ("    \"%s\": %s,\n", SRT_ABI_I386,
            srt_architecture_can_run_i386 () ? "true" : "false");
-  g_print ("    \"x86_64-linux-gnu\": %s\n",
+  g_print ("    \"%s\": %s\n", SRT_ABI_X86_64,
            srt_architecture_can_run_x86_64 () ? "true" : "false");
   g_print ("  }\n");
 
diff --git a/steam-runtime-tools/architecture.c b/steam-runtime-tools/architecture.c
index f04e9a75f217924c49faef6e284b2d1de647bbb7..e8a5f4390f34524bb440d39ec03c756440fda93c 100644
--- a/steam-runtime-tools/architecture.c
+++ b/steam-runtime-tools/architecture.c
@@ -84,7 +84,7 @@ out:
 /**
  * srt_architecture_can_run_i386:
  *
- * Check whether we can run an i386 executable.
+ * Check whether we can run an i386 (%SRT_ABI_I386) executable.
  *
  * For this check to work as intended, the contents of the
  * `libsteam-runtime-tools-0-helpers:i386` package must be available
@@ -107,13 +107,13 @@ out:
 gboolean
 srt_architecture_can_run_i386 (void)
 {
-  return _srt_architecture_can_run ("i386-linux-gnu");
+  return _srt_architecture_can_run (SRT_ABI_I386);
 }
 
 /**
  * srt_architecture_can_run_x86_64:
  *
- * Check whether we can run an x86_64 executable.
+ * Check whether we can run an x86_64 (%SRT_ABI_X86_64) executable.
  *
  * For this check to work as intended, the contents of the
  * `libsteam-runtime-tools-0-helpers:amd64` package must be available
@@ -125,5 +125,5 @@ srt_architecture_can_run_i386 (void)
 gboolean
 srt_architecture_can_run_x86_64 (void)
 {
-  return _srt_architecture_can_run ("x86_64-linux-gnu");
+  return _srt_architecture_can_run (SRT_ABI_X86_64);
 }
diff --git a/steam-runtime-tools/architecture.h b/steam-runtime-tools/architecture.h
index bf05afdff60c15d5e7f5d124db6f027c36d9369d..ed1562d9973efeae0d2852832a520d027e3da069 100644
--- a/steam-runtime-tools/architecture.h
+++ b/steam-runtime-tools/architecture.h
@@ -31,5 +31,21 @@
 
 #include <glib.h>
 
+/**
+ * SRT_ABI_I386:
+ *
+ * The multiarch tuple for the i386 (IA-32) ABI normally used on
+ * 32-bit x86 Linux.
+ */
+#define SRT_ABI_I386 "i386-linux-gnu"
+
+/**
+ * SRT_ABI_X86_64:
+ *
+ * The multiarch tuple for the x86_64 ABI normally used on
+ * 64-bit x86 Linux.
+ */
+#define SRT_ABI_X86_64 "x86_64-linux-gnu"
+
 gboolean srt_architecture_can_run_i386 (void);
 gboolean srt_architecture_can_run_x86_64 (void);
diff --git a/steam-runtime-tools/library-internal.h b/steam-runtime-tools/library-internal.h
index 4fef587f4a2c0b83dd7ea517c00c3afdc04b705d..ff243daa13b0e6a835aa8b9b1e609054424c714e 100644
--- a/steam-runtime-tools/library-internal.h
+++ b/steam-runtime-tools/library-internal.h
@@ -30,7 +30,7 @@
 
 /*
  * _srt_library_new:
- * @multiarch_tuple: A multiarch tuple like i386-linux-gnu,
+ * @multiarch_tuple: A multiarch tuple like %SRT_ABI_I386,
  *  representing an ABI
  * @soname: A SONAME like libz.so.1
  * @issues: Problems found when loading a @multiarch_tuple copy
diff --git a/steam-runtime-tools/library.c b/steam-runtime-tools/library.c
index 05c1c07860108df2c1e684eeb3117812daaaf031..00718b7d0b1b0f109b2b3805bb08320538892ee4 100644
--- a/steam-runtime-tools/library.c
+++ b/steam-runtime-tools/library.c
@@ -25,6 +25,7 @@
 
 #include "steam-runtime-tools/library.h"
 
+#include "steam-runtime-tools/architecture.h"
 #include "steam-runtime-tools/enums.h"
 
 /**
@@ -183,8 +184,8 @@ srt_library_class_init (SrtLibraryClass *cls)
   properties[PROP_MULTIARCH_TUPLE] =
     g_param_spec_string ("multiarch-tuple", "Multiarch tuple",
                          "Debian-style multiarch tuple representing the "
-                         "ABI of this library, usually i386-linux-gnu "
-                         "or x86_64-linux-gnu",
+                         "ABI of this library, usually " SRT_ABI_I386 " "
+                         "or " SRT_ABI_X86_64,
                          NULL,
                          G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
                          G_PARAM_STATIC_STRINGS);
@@ -220,8 +221,8 @@ srt_library_get_soname (SrtLibrary *self)
  *
  * Return the multiarch tuple representing the ABI of @self.
  *
- * Returns: A Debian-style multiarch tuple, usually `i386-linux-gnu`
- *  or `x86_64-linux-gnu`
+ * Returns: A Debian-style multiarch tuple, usually %SRT_ABI_I386
+ *  or %SRT_ABI_X86_64
  */
 const char *
 srt_library_get_multiarch_tuple (SrtLibrary *self)