diff --git a/src/devices/cpu/powerpc/ppcdrc.cpp b/src/devices/cpu/powerpc/ppcdrc.cpp
index 00c635fc95c..120328a50a0 100644
--- a/src/devices/cpu/powerpc/ppcdrc.cpp
+++ b/src/devices/cpu/powerpc/ppcdrc.cpp
@@ -1068,7 +1068,7 @@ void ppc_device::static_generate_memory_accessor(int mode, int size, int iswrite
 		UML_AND(block, I0, I0, 0x7fffffff);                                 // and     i0,i0,0x7fffffff
 	UML_XOR(block, I0, I0, (mode & MODE_LITTLE_ENDIAN) ? (8 - size) : 0);   // xor     i0,i0,8-size
 
-	if ((machine().debug_flags & DEBUG_FLAG_ENABLED) != 0)
+	if ((machine().debug_flags & DEBUG_FLAG_ENABLED) == 0)
 		for (ramnum = 0; ramnum < PPC_MAX_FASTRAM; ramnum++)
 			if (m_fastram[ramnum].base != nullptr && (!iswrite || !m_fastram[ramnum].readonly))
 			{