diff --git a/src/test/testvm.c b/src/test/testvm.c
index ec1cf251..4d386a05 100644
--- a/src/test/testvm.c
+++ b/src/test/testvm.c
@@ -1198,13 +1198,13 @@ TEST test_HIRES_on(bool flag_80store, bool flag_page2) {
 
     if (flag_80store) {
         if (flag_page2) {
-            switch_save = switch_save & ~(SS_HGRRD|SS_HGRWRT);
-            ASSERT((void *)base_hgrrd  == (void *)(apple_ii_64k[0]));
-            ASSERT((void *)base_hgrwrt == (void *)(apple_ii_64k[0]));
-        } else {
             switch_save = switch_save | (SS_HGRRD|SS_HGRWRT);
             ASSERT((void *)base_hgrrd  == (void *)(apple_ii_64k[1]));
             ASSERT((void *)base_hgrwrt == (void *)(apple_ii_64k[1]));
+        } else {
+            switch_save = switch_save & ~(SS_HGRRD|SS_HGRWRT);
+            ASSERT((void *)base_hgrrd  == (void *)(apple_ii_64k[0]));
+            ASSERT((void *)base_hgrwrt == (void *)(apple_ii_64k[0]));
         }
     } else {
         ASSERT(base_hgrrd  == save_base_hgrrd);    // unchanged
diff --git a/src/vm.c b/src/vm.c
index cfaef3ae..7b829bb4 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -313,13 +313,13 @@ GLUE_C_READ(iie_hires_on)
 
     if (softswitches & SS_80STORE) {
         if (softswitches & SS_PAGE2) {
-            softswitches &= ~(SS_HGRRD|SS_HGRWRT);
-            base_hgrrd  = apple_ii_64k[0];
-            base_hgrwrt = apple_ii_64k[0];
-        } else {
             softswitches |= (SS_HGRRD|SS_HGRWRT);
             base_hgrrd  = apple_ii_64k[1];
             base_hgrwrt = apple_ii_64k[1];
+        } else {
+            softswitches &= ~(SS_HGRRD|SS_HGRWRT);
+            base_hgrrd  = apple_ii_64k[0];
+            base_hgrwrt = apple_ii_64k[0];
         }
     }