diff --git a/Makefile b/Makefile
index 4f6d6625..6aedbcae 100644
--- a/Makefile
+++ b/Makefile
@@ -58,7 +58,12 @@ install: all
 	${Q}install -s -m 555 rgbfix ${BINPREFIX}/rgbfix
 	${Q}install -s -m 555 rgblink ${BINPREFIX}/rgblink
 	${Q}install -s -m 555 rgblib ${BINPREFIX}/rgblib
-	${Q}install -m 444 src/rgbds.7 ${MANPREFIX}/man7/rgbds.7
+	${Q}install -m 444 src/rgbds.7 ${MANPREFIX}/man7/rgbds.7 || \
+		(echo Installing manpages to ${MANPREFIX} failed. >&2 && \
+		 echo Check where your manpages are installed and set the \
+		      proper directory >&2 && \
+		 echo with, e.g., make install MANPREFIX=/usr/share/man \
+		 >&2 ; false)
 	${Q}install -m 444 src/asm/rgbasm.1 \
 		${MANPREFIX}/man1/rgbasm.1
 	${Q}install -m 444 src/fix/rgbfix.1 \
diff --git a/src/asm/symbol.c b/src/asm/symbol.c
index 0285e627..82443c85 100644
--- a/src/asm/symbol.c
+++ b/src/asm/symbol.c
@@ -365,12 +365,12 @@ sym_GetValue(char *s)
 			}
 			return (getvaluefield(psym));
 		} else {
-			if ((nPass == 1) || (psym->nType & SYMF_IMPORT)) {
-				/* 0x80 seems like a good default value... */
-				return (0x80);
-			} else {
-				yyerror("'%s' not defined", s);
+			if (nPass == 2) {
+				/* Assume undefined symbols are imported from somewhere else */
+				psym->nType |= SYMF_IMPORT;
 			}
+			/* 0x80 seems like a good default value... */
+			return (0x80);
 		}
 	} else {
 		if (nPass == 1) {